There are many books and quotes refering to your thoughts and the impact they have on your life. For example, As a Man Thinketh by James Allen, The Battlefield of the Mind by Joyce Meyer, "Whatever the mind can conceive and believe, it can achieve." - Napoleon Hill, "Whether you think you can or you think you can't - you're right." - Henry Ford, and "Watch your thoughts: They become your words. Watch your words: They become your actions. Watch your actions: They become your h