1. Your diagnosis
2. The competency / education / specialism of the therapist
3. How much you are willing to commit to the process
4. The type of therapy
5. How good a connection you have with the therapist.
I had 9 therapists before I found one who had any positive impact.
I don't have the time and the money to find the right one. I've seen many. I quit years ago. I was tired of it. They just try to make it last forever so I will keep paying.