TryingtoMaintain, I am so glad I found your post. I can relate to so much of what you have just described; in particular:

- high energy/racing thoughts, but negative mood
- constant mood shifts
- daily anxiety (for me it always starts between getting off my first bus in the morning and getting on the second)
- struggling to fall/stay asleep (although in my case it sometimes switches round and in a depressive episode I can sleep to the point that people think I'm lazy)

Hopefully your diagnosis will be a positive shift for you, and you can get help that is tailored towards managing/stabilising your moods rather than simply tackling one symptom on its own.