For years I was frequently falling off the wagon and then a different mental approach helped me. I used to want to "reward" myself with a drink after a lengthy stretch of being sober and you know what happens next: horrible bender, days of being violently ill and feeling shame afterwards. So now when the "reward" idea pops into my brain, I think of the "consequences" and the reward idea doesn't seem so great. And the thing is, being sober feels so much better both physically and especially mentally. Feeling very grateful these days.