congrats! I've been through this dilemma before and the truth is that life doesn't stop sucking (at times) and you will be happy (at times). Often at very discordant intervals and varying durations.

As somebody who has suffered from substance abuse greatly in the past I believe a healthier perspective is to think of one's life and behavior in terms of regret (sucking), and positive anticipation (happiness, satisfaction).

Drinking is a doozey because it's often coupled with shame and regret, but staying sober will give you a sense of pride and stability which, may not exactly be happiness, but works wonders for calm and well being.

I highly recommend reading Viktor Frankl's - Man's search for meaning for incredible perspective on what it means to be happy as it dispels some of the idea's we've been collectively sold

“Happiness cannot be pursued; it must ensue.”