Out of necessity (after existing conventional treatments offered little help) I've been conducting a 10+ year self-experiment related to this topic. Like others have described, when I started experiencing symptoms of conditions resembling anxiety, depression, ADHD, mild bipolar, paranoia and CFS/ME, I initially sought mainstream medical psychiatric treatment and undertook talk therapy and was prescribed anti-anxiety…
This is known as psychodynamic therapy for others who want a name for it. There are therapists that specialize in it. I must warn you its a very long type of therapy with a lot of sessions, so it will cost you $$$. Also some people use it as a weekly whining session for years and never get anywhere with it, so please go into it trying to get results.
A bit harshly formulated, but I agree. I've seen people being quite aimless in their therapy. I'd recommend becoming an expert on your own condition.