The funk you are experiencing might lift if you can change the idea behind your motivation for sobriety. If that motivation is giving something up,
Ike the deep pleasure drinking alcohol can bring, this is going to be a rough road ahead.
If you can look at it instead as making a choice to experience all the things that being a drunk denies us, things get off on a more positive and affirming footing. What remains is to then go and pursue these new abilities. Do things that require and create mastery and a feeling of accomplishment, things that let you experience the joy and beauty around us. It makes us happy, and that's what this whole thing is about. Onward!