It's not the same kind of therapy, but my dad got into a lot of accidents and needed surgeries so he had to go to physical therapy a lot.
I'd go with him and watch him work with physical therapists and it made me want to be one too.
I planned to be one for a long time, but eventually got to where people scared me so I didn't want to work near people.
I also wanted to be a psychiatrist or a psychologist, but I figured I was too screwed up to be one, so how would I help others?
Then I decided I'd prefer to work with animals.
Preferably vet assistant, but training and grooming and stuff would be cool too u8