Gr8, once I had some sober time under my belt I too went through the period of coming to grips with my past and what I was as a wife, daughter, friend, etc. Sometimes I had waves of just pure negativity come over me.
I found that it passed, writing things out made me feel much better and I also found face to face support to be tremendous for me.
What I countered those negative thoughts with was all the positive change that I was making. I am not that person anymore and I have hopefully many years to live a better life and that my friend is my blessing.
I will add that I think talking to your Dr. and talking to someone as others have shared would be beneficial. Early recovery can be a bit bumpy but if you feel that it is at times overwhelming and have had some dark thoughts then I suggest for yourself to get some help.
Huggs and stay the course. I found as I went along that added support where it was needed. You don't need to go this alone my friend.