I've found doing this, writing on this site, helps. Maybe keeping a diary may help? Sounds pretty fluffy but screw it, when you're writing it, you not indludging. And the best advice is just...**** it. Yes, it gets hard, just don't do it. Do not do it. No matter what else, that is the key thing, it doesn't matter how you feel (it will get better), just do not make the physical motions required to induldge, if you feel your mind's giving up, don't let your body do it. It will get batter, think about why you want to give up, the negative conotations, and the benefits your getting from not doing it. Then stick on your favourite movie, or hit the gym, just do anything to keep you away and occupied until you get past the rough patch.