I don't have much experience as diagnosed, although I have suffered from the disorder since my teens. Unfortunately, it is now 20 years later. I do know the hopeless feeling of wishing I would just die to make the suffering end. Prior Doctors had me on antidepressants, which made me fall into a pit I didn't think I'd ever get out of...plus they made me gain weight
I thought I was going to die from despair, and I actually left my husband trying to blame it on him. Once I was properly diagnosed, and started taking meds, my mind cleared, I felt better, stopped sleeping all day, and was able to function again. My relationship with my husband has improved and I'm almost ready to move back...once I figure out the lease problem!
I still cycle fairly rapidly, but not as severely. I wish for you that you can find the ladder out of the pit soon.
Be well