Congratulations on 4 weeks of sobriety! Awesome!
I had a lot of anger/rage in the early days too and I think it was simply directed towards myself for making such bad decisions. Someone suggested I try journaling. Since nothing else was working, I gave it a try. When the anger took control I sat down and wrote about what I was feeling and just let it out.
Have you considered looking for a different type of job, one with less stress? It might be more enjoyable and manageable for you. You can get through this and you're doing great!