Dear Whereto52,
I am so very, very sorry that you are struggling and suffering. That is just heartbreaking. I wish I had the knowledge, experience and wisdom to help but sadly I lack these things especially with regard to AvPD and dysthymia. I hope others here with more insight will read your post and respond with really helpful ideas. So terribly sorry I could not be helpful to you!
Sincerely yours, -- Yao Wen