I remember feeling that way and still do from time to time. it is so easy to get "lost" in their addiction. what I mean is that we lose ourselves. there is so much drama and hype surrounding the addict, that once it is gone, our lives seem empty. for me, I remember trying to figure out what do I really like to do, what would make me happy at the moment, etc. and just sitting there, like an empty slate. nothing coming to mind.
not sure if that's how you feel, but wanted to let you know that it does get better. time helps us regain back our lost selves. we do have to put in the work though. I am still struggling a lot with that myself. being occupied with the kids so much and working does help, but I still don't fully feel "myself".
hang in there. it will pass. hugs and hope.
pacific