Based on request from @okabe_rintarou here are my experience with psychology "experts".

First one I remember was when I was in kindergarden. It was a psycholog who at the time diagnosed me with ADHD (quite a new diagnosis at the time for czech doctors). Although I don't remember much about this doctor, he said one important thing. "He will be lucky if he manages to go through a SPECIAL education..." In other words, according to him, I was so useless, that even primary school would be an impossible task.
I also remember an IQ test that I took about 2 years later. To say, that the question I "failed at" is a total bullshit would be an understatement. But even then, they did diagnose me at 110. (I didn't go under 130 in any test since) Still quite a jump from an unusable piece of trash that will never finish primary school don't you think?

Another one is a quite funny story, as long as you can ignore the context. As a family, we went to therapy. I thought my step mom and sister were abusive, while the rest of family blamed me (obviously). The therapist agreed with my side of the story 100 percent on the first visit.
There was never a second visit

And finally. When I was at UNI, I was unable to cope with the speed needed to stay in that AMAZING school. I have noticed, that the therapist was offered for free to students. (Yes, this is the kind of school, that is know for breaking people, so even they knew it was needed.)
Bud damn, she was... special. First, she told me, that maybe, I should just give up... Then, she was surprised, when I refuted the tabula rassa theory to her, and after that, she started to recomend me some esoteric books.

I am not joking, that I knew more about psychology then her... -_-