wow-what a familiar feeling!
i posted about the same thing in the social forum.
as a teenager you were diciplined?
so was i!
but what motivated you then may not work for you now.
i think that maybe when we are yong sometimes it is easier.

and i will tell you something my T told me, which i for got about and then came up with it on my own -we CAN`T control all that`s happening - and our body and mind need ballace! you have been that way for years-and now you funciton in a differently.

i think that the first thing towards getting things better is EXCEPTING the situation (like some1 here mentioned) and thus you are not "stuck" in it.
let yourself be happy-YOU DESERVE IT!
maybe if you let yourself enjoy that "wrong" thing you are doing and won`t scold yourself you will feel satisfied and will balance it with more organized behaviour the day after....

me too, i felt like everythng is fine, except for THAT.
you know we all want to be "in control"
it`s not untill we let go of everything and resist nothing.