In addition, pay attention the modalit(ies) of the therapist. If you've tried a few therapists and haven't found one that clicked, try one that emphasizes a different modality.

As an example: Cognitive Behavioral Therapy (CBT) vs. Eye Movement Desensitization and Reprocessing (EMDR) vs. Freudian Psychotherapy vs. Ketamine Therapy vs. [insert whatever modality you'd like]