Some persons advise you to watch each step of the mind and note down all the false steps and evil intentions it encountered. No, that is dangerous practice. Do not pay attention to its vagaries; strive for what you need and not for what you have to avoid. Count the false steps and you will be led to commit them again. Resolve to walk right and your steps will not falter or fail. Be like the tongue in midst of the teeth, carefully, confidentially, courageously going about its task, without getting bitten.
(From : Sai Veda, The Word of God, sayings of Bhagavan Sri Sathya Sai Baba)