Hello.
I'm a relatively newly diagnosed patient (about 1 year). I find the steroids help tremendously in the short term. I always make sure to take them first thing in the morning to minimize the effect on sleep. But yes, inability to sleep has been one of my major frustrations (due to discomfort, not anxiety). It's gotten better as I have found a med regimen that is working fairly well. There are lots of medication options out there, but it might take some time to find the right one for you. My mood hasn't been affected too much, except when in an acute flare up (which hasn't happened in 6 months now).
This site has lots of good information and scientific articles, as well as people who know what it is you're going through. I think it's fair to say (speaking for myself only) that I'm better than I was at the beginning, but I wouldn't say I'm "well." I have had to adjust some things, and have realistic expectations of what my new reality is. I'm lucky to have a supportive family, an understanding job (healthcare), and good insurance. So in that sense, I'm grateful.
Hang in there. Best wishes.