the cause, in my mind is the lack of connection to source.. the outlet for the filling the void is food, sex, drugs, entertainment.. etc.

reconnecting to source is a processes of being still and silent.... access that part of you that is not the mind, that part that can observe the mind. it doesn't talk, it just is... when you go there and do it consistently, the unconscious thoughts come out.

i've also noticed that doing this creates a 'gap' in my mind between thoughts and actions. meaning i hear a loud noise it doesn't make me jump, I just hear it and decide if I need to do anything in relation to it.

anyway, long way of saying that choosing another outlet to cover it up isn't the answer, get rid of it all together by reconnecting with the source inside of you which is actually the responsible for the feeling of lack.