61. A Good Definition of Discipline

Dr. Wayne Dyer defines discipline as an inner Code of Ethics, something for you to internalise and use in order to be an effective, intelligent, moral no-limit person. It has nothing to do with external "discipline", crime, punishment or criticism of how you yourself or others behave. True discipline always comes from within. To this end, learn to always do what is true to who you are inside rather than going along with what others are doing.

36. Your Inner World and Personal Power

Take responsibility for the development of your mind and heart. No-one else is capable of controlling what goes on in your heart and mind unless you surrender that control. Your inner world belongs to you and only to you. Everything you think feel and do is under your control. If you should ever find that you have surrendered it, take back your power immediately. Learn, therefore to seek only your own approval as measured by your own internal code of ethics, what Warren Buffett calls your inner score-card.
http://blogs.wsj.com/deals/2010/08/05/mean-street-obama-buffett-and-the-giving-pledge-follies/

http://www.gurufocus.com/news.php?id=102454