part one

don't trust strangers even he do you a favor.Nobody would not hurt you.The only difference is how quick and easy you forgive them.

part two

don't enrage OCD patients.If you find them nervous,try to destroy the things which make them feel so.Remember they can't be persuaded.

part three

don't leave the windows open if it's on the first floor or something like wire poles or water pipes besides.Everybody can go through them and come to your face.