I also have a history of sleep problems, so I completely understand what you're going through in regards to that. I am lucky right now as my night meds have been working fairly well, but like you, I also have more trouble sleeping when my anxiety rises.
I am glad that you have such a supportive treatment team. As for social support, are there any mental health related support groups in the area that you could attend in addition to the AA?
I hope that you are able to find a way to resolve some of these issues, and in the meantime we are always here to listen. As stated above, you can write as long of a post as you need to. If they had a problem with long posts, I'd have been kicked out long ago LOL...
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From the movie The Hours: "If I were thinking clearly, Leonard, I would tell you that I wrestle alone in the dark, in the deep dark, and that only I can know. Only I can understand my condition. You live with the threat, you tell me you live with the threat of my extinction. Leonard, I live with it too."