To have the approval of your conscience when you are alone with your thoughts is like being in the company of true and loving friends. To merit your own self respect gives strength to character. Conscience is the link that binds your soul to the spirit of God. -President David O. McKay
Both Gandhi and former Prophet David O. McKay (2 wonderful men) would agree with the simple premise that "as a man thinketh, so is he." I've always believed this. It's simple idea but quite profound (which is often the case with simple things). Learning to control my actions feels like a good challenge while learning to control my thoughts feels like a great challenge!