There are no promises of happiness in sobriety.
What we are offered in Alcoholics Anonymous are the tools to make ourselves happy, and these tools are manual. You’ll need to sort of work as an apprentice and be guided along by someone who has much more experience. In AA that’s called the Sponsor/Sponsee relationship. Just remember that you have to want sobriety and you have to want happiness.
Earlier I wrote a post about coping with depression in anxiety. This is a perfect example of how to use the tools. Here’s a snippet to get you started.
And here is where you can find the full post!