The 13 principles in Think and Grow Rich are Desire, Faith, Autosuggestion, Specialized Knowledge, Imagination, Organized Planning, Decision, Persistence, the Power of the Master Mind, the Mystery of Sex Transmutation, the Subconscious Mind, the Brain, and the Sixth Sense.

Desire is the starting point for achieving success, according to Think and Grow Rich.

Hill believed that a burning desire to achieve one's goals is necessary to provide the motivation and persistence required to overcome obstacles and setbacks.

Faith is a major principle outlined by Napoleon Hill in his book “Think and Grow Rich”. According to Hill, faith is the cornerstone of success and an integral part of achieving one's goals.

He believed that faith works through the power of visualization and belief - by having faith in yourself and your ability to succeed, you can manifest that success into reality.

Hill also believed that faith should be backed up with action - it is not enough to simply have faith, but you must take action in order for it to manifest into reality.

By taking consistent action towards your goal, you are signaling to the universe that you are serious about achieving it and this will help bring it into being.

In addition to its role as a catalyst for achieving one's goals, Hill believed that faith was the key to unlocking inner potential - it opens up a person's mind to endless possibilities and enables them to tap into their inner strength.

By believing in something greater than ourselves, we gain access to strength, courage and wisdom which can help us overcome obstacles on our path towards success. Once you master desire, you master faith!

Finally, Hill argued that having faith leads to peace of mind - when one has faith, they are no longer concerned with what they cannot control or with worrying about failure. Instead, they focus on what they can do and trust that things will work out in the end.

Overall, according to Napoleon Hill's philosophy in "Think And Grow Rich", faith plays an important role in the process of achieving one's goals.

It not only provides a necessary push towards realizing those goals but also gives access to one's inner potential and helps create peace of mind along the way.

Autosuggestion is a method of self-improvement that involves repeating affirmations, mantras, or visualizing positive outcomes in order to influence the subconscious mind.

This technique was popularized by the French psychologist, Émile Coué, and was later embraced by Napoleon Hill in his book "Think and Grow Rich".

Autosuggestion is based on the premise that the subconscious mind is powerful and can influence a person's thoughts, behavior, and beliefs.

The subconscious mind is responsible for up to 90% of a person's thoughts and actions, and can be shaped by repetition and visualization.

By consistently focusing on a positive thought or idea, it can become a reality or influence one's actions and decisions.

The idea is to train the subconscious mind to think positively, to encourage self-belief, and to create a positive mental attitude.

Autosuggestion is often used in personal development, sports psychology, and coaching.

It can help individuals to overcome negativity and self-doubt, to develop a clearer sense of purpose, and to improve their overall quality of life.

The technique of repeating affirmations or visualizing positive outcomes can be used to achieve a wide range of goals, from improving self-confidence to increasing motivation and enhancing overall performance in a particular area.

In addition to personal development, master autosuggestion has also been used to address health concerns.

By visualizing positive outcomes and sending positive messages to the subconscious mind, it is believed that individuals can improve their physical and mental well-being.

Overall, the technique to master auto suggestion is an incredible and powerful tool for self-improvement and success.

By harnessing the power of the subconscious mind, individuals can train themselves to think positively, overcome obstacles, and achieve their goals.

Specialized Knowledge is one of the 13 principles outlined in Napoleon Hill’s classic book “Think and Grow Rich”.

This principle emphasizes the need for individuals to acquire expertise and skills in a particular field in order to achieve success.

Hill believed that in order to succeed in any area of life, one needs to possess specialized knowledge that is specific to that area.

Specialized knowledge can be acquired through education, training, or experience.

It enables individuals to become experts in a particular field and puts them in a position to provide value to others.

When you possess specialized knowledge, you are able to offer unique solutions to problems that others cannot.

This puts you in a position of authority and earns you respect in your field.

In today’s fast-paced and constantly changing work environment, possessing specialized knowledge is crucial.

It helps individuals stay ahead of the competition and remain relevant in their field.

For example, in the technology industry, staying up-to-date with the latest programming languages or software tools is essential to remain competitive.

Specialized knowledge can also be a source of income for individuals. It can open up opportunities for consulting work, speaking engagements, or teaching others in the same field.

Having specialized knowledge can also help in negotiating higher salaries or securing better job opportunities.

Overall, the principle of specialized knowledge emphasizes the importance of continuous learning and skill development as an integral part of achieving success.

It is crucial for anyone who wants to excel in their chosen field, and is a fundamental component of the personal and professional growth of an individual.

Creative imagination plays a crucial role in the process of achieving success.

The power of imagination allows us to envision our goals and what could be possible with the right hard work and dedication.

Our creative imagination helps us conceptualize things that are outside of our current reality, thus expanding our horizons and inspiring us to take action.

Imagination also helps us unlock our potential - it gives us the opportunity to break away from limiting beliefs and create new possibilities.

By using visualization techniques, we can picture ourselves succeeding, no matter how far-fetched these ideas may seem at first.

This inner spark can help drive us forward when life's setbacks seem too difficult to tackle alone.

Furthermore, having an imaginative mindset allows us to come up with creative solutions for problems that may have seemed insurmountable before.

When faced with difficult obstacles, it is important to remain open minded and use our synthetic imagination to find alternative methods of achieving success instead of giving up early on.

Imagination also leads to long-term success - if we can keep our dreams alive in the present and focus on what is yet to come, then we can be sure that those achievements will one day become a reality.

Many successful entrepreneurs have credited their vision and willingness to think outside the box as one of the main reasons they achieved their goals.

In conclusion, imagination is a key factor in determining a person's success or failure in any endeavor.

By harnessing its power and staying positive, anyone can create new opportunities for themselves and reach their goals more quickly than ever before.

Organized Planning is the process of developing a clear, actionable plan to achieve one's goals.

Think and Grow Rich emphasizes the importance of Organized Planning in achieving success, as it allows individuals to break down their goals into actionable steps and stay focused on their objectives.

Persistence is a vital part of achieving success, as it teaches us not to give up when we encounter difficulties on our journey.

Additionally, it reinforces the idea that we must continue to take action in order for our goals to become a reality.

One of the most important lessons of persistence is endurance - it allows us to push past our mental and physical limits and complete tasks despite any obstacles or setbacks.

By developing these qualities, we can persevere through difficult times and focus on what needs to be done in order to achieve our goals rather than allowing ourselves to be overwhelmed by outside forces.

Persistence also strengthens our willpower - it teaches us how to stay motivated and determined even when faced with overwhelming odds or daunting tasks.

In times of difficulty, it is easy to become discouraged but if we possess the strength of will to keep pushing forward, then eventually those obstacles will be overcome.

Furthermore, having persistence gives us faith in ourselves - this positive thinking demonstrates that nothing is impossible and that with enough dedication anything can be achieved.

This gives us a sense of purpose and confidence which can help inspire others around us and create a positive ripple effect leading towards ultimate success.

Finally, persistence ensures that we never give up on ourselves or our dreams no matter how hard things may seem at first glance.

No matter how far away from success one may feel, by maintaining an unwavering focus on one’s goals they can eventually reach their desired destinations.

Thomas Edison and Napoleon Hill are two of the most iconic figures from history who championed persistence as a pathway to success.

Edison was famous for his commitment and dedicated work ethic which ultimately led him to create some of the world's most noteworthy inventions such as the lightbulb and phonograph.

Similarly, Napoleon Hill is renowned for writing one of the most influential books on success ever published - Think and Grow Rich.

His classic guide teaches readers the power of perseverance in order to achieve any goal they set their minds to.

Both Edison and Hill demonstrated that hard work coupled with unrelenting persistence is key when striving for success.

Through their example, they taught us that we must never give up no matter what may stand in our way or how difficult things may seem at first glance.

By dedicating ourselves to our vision no matter what circumstance we find ourselves in, anything can be achieved eventually with enough determination.

In conclusion, Thomas Edison and Napoleon Hill are excellent cases-in-point when it comes to how important persistence is when trying to succeed in life. 

Their stories serve as an inspirational reminder that if we keep going despite any setbacks, then there will always be a light at the end of the tunnel waiting for us.

The Power of the Master Mind refers to the collective energy and expertise of a group of individuals working towards a common goal.

In Think and Grow Rich, Napoleon Hill teaches that the Power of the Master Mind group can help individuals achieve success by providing support, knowledge, accountability and thought vibration.

The Sixth Sense refers to the ability to access knowledge beyond what is available through the five senses.

Think and Grow Rich teaches that individuals who develop their Sixth Sense are more likely to be successful, as they can tap into their intuition and access knowledge and insights that are not available through logical thinking alone.

Acknowledge its ability and assign it tasks, then observe as it works powerfully. The Sixth Sense is a unique sense whereby unlimited infinite intelligence grants communication.

To comprehend and employ this philosophy, one must learn the other 12 principles firstly.

The sixth sense is an element of the subconscious mind which provides creative imagination.