Key#4 

Common sense 

       The fourth key is common sense and to have common sense is to be self aware of your area and knowing when to do things and not to do things. but you must learn from others people mistakes and try not to be under their shoes because if your were to take advise from other people that committed bad things you might as well be where they were at the time they committed the bad deeds. You must know right from wrong and knowing the differences between and never let your feelings choose for you or your hatred take over your will because you will your sanity. train your mind over different problems so that you can make difficult choices to become easier choices and not make you stress out. to have common sense you must know the differences of being a person on who is aware and not aware.  before doing things you have to think through them before making a move.