Meditation can help develop will power. While meditation you are supposed to concentrate on your breathing and when you find your mind wandering you are supposed to go back to your breathing. The mind would much rather entertain itself with other thoughts and worries so every time you redirect it you are strengthening your will power. This can supposedly help us in the real world when we need to concentrate, do, or not do somsthing. It is as little as not letting something rude slip from your tongue. It has nothing to do with others and everything to with strengthening the mind to be more aware of the present because when you are not is when bad decisions are made on auto pilot.