Book Recommendation everyone should read.
The most common refrain you hear from dysthymia sufferers here is that they have tried everything and nothing works. They are also often totally unaware that there is a dedicated form of psychotherapy made specifically for the unique features of dysthymia that make it difficult to treat. The book below is the easiest exposition of that treatment, and is a memoir by the creator of that therapy. Everyone should read to at least see if they can see echoes of themselves in what Dr. McCullough is talking about.