What should I look for that might indicate a skilled practitioner/good match? Are there any reliable indicators specific to the first session?

If something happens that I don't like, how can I tell if the person is a bad therapist (or just a bad match) whom I shouldn't waste my time with or if I'm just doing the extremes of devaluation thing and writing them off for a fairly minor thing?

One of the main things I'm worried about is them basically trying to brainwash me. I have some very unusual traits that many psychology and self-help resources claim is impossible, the main one being that I'm a victim of severe abuse and bullying but have very good self-esteem and don't care about "fitting in." I'm so used to being invalidated and treated like a freak (note: being *treated* like a freak, not thinking I am one!) that I can't imagine a therapist believing me. I'm worried that they'd neglect my real issues (rage, splitting, boredom, fear of my family abandoning me, etc.) in favor of secretly trying to convince me that I hate myself and want a million friends and a romantic relationship, which could not be farther from the truth. How realistic is this fear?

Thanks.

P.S. Once I hopefully get some answers, I might end up deleting this thread due to paranoia. Sorry!