First, I don't have insomnia, but I am lucky if I can sleep 3 hours in a row. Even then, I have serious night terrors, hypnogogic dreams (hallucinations), or just frustrating incidences that I wake up more exhausted than what I was earlier. That is still an issue for me after it started 6 years ago. I have been the ambien type products, trazadone, seroquel and prazosin. None work, and I could sure use some help here too on that issue.
Second, I was an alcoholic...am....but struggled with accepting that fact. But, I couldn't ignore the fact that when I would drink I could put away up to 16 in a night...and, that's not OK. Plus, the BIGGER picture: I was a suicidal drunk. Obviously, that is seriously dangerous. You stated that you were hurting yourself badly when you were drinking. So, I would really like to suggest that focusing on your drinking concerns would be a very important place to start!! Personally, I saw several inpatient facilities, outpatient addiction therapists and went to a lot of AA meetings to get things rolling. But, it didn't work overnight. It took me years to finally beat it. It was a process for me just like becoming one (an alcoholic). I now have been without alcohol in my life for 2 years 5 months. I never saw my life without alcohol in it. But there is life without it and it is even better than with it!! Stay strong and focused on the ultimate goal ...life without it...during the process.
Third, I am on celexa, and it works for me regarding the serious depression I have. My depression literally hurts me (pain in heart, chest and even my throat tightens and closes). If I don't take it or take less than the dose I am on now, I hurt. So, I stay on it. But, I also take Lamictal which helps stabilize my moods. I am generally more calm now and not so overly angry or crying all the time. (And then there is the severe anxiety which Buspar and Vistiral help with...but there are times that I need to take an Ativan to stop a severe panic attack...but, it also helps me sleep a bit...)
Oh, and though I have only been part of this site recently, I have found it a great place to talk out the things you shared in your post.