Animal Therapy Dog

Since I've had a sudden change in career interest due to the high possiblity of me having an autoimmune illness such as Multiple Sclerosis and being unable to pull the long hours of a vet, I've decided to make my own profession from a moosh of careers. I'd like to do animal therapy, rehabilitate animals from abuse situations/fighting/etc, behavioral studies, and public speaking against animal cruely.

Anyway, does anyone have any advice on a dog breed that think would be a good therapy dog...

Animal Therapy Dog