I've found quiting to be perceived as hard because quitting has a negative stigma attached to it. I find that keeping myself busy doing things, has a positive stigma attached. Doing things and completing tasks is rewarding. So I just stay busy, so busy i dont have time for what ever it was i was trying to not do. Success is a mind game. After you do something for a month it will begin to become a habit. That goes for "good" and "bad" activities. With drugs n whatnot, finding new social circles seems to be essential. Go to new places, meet new people. "Mix it up" go to a different grocery store. If you drive to a nearby coffeehouse ride a bike. Take a different rout to work, just for fun.