A person’s will is one of the most powerful forces in our world. Your will can enable you to do things you would never dream possible. The force behind will is passion. The more driven you are, the more will you possess to accomplish whatever you seek out to do. Without a strong will, you will never succeed. Your will is a powerful form of psychological leverage driven by your mental toughness, it keeps you pushing ahead regardless of the opposing challenge. Your will is demonstrated through persistence. Once your will has been broken, you have given up.
Will is like a muscle, the more you use it, the stronger it becomes. The strongest leverage for all achievement is passion and desire. Weak desires, bring weak results, strong desires produce powerful results. The most difficult person to stop is the person with a burning desire
– Kevin Seaman/ From My Book The Mind Game Of Competition