I like psychology, art, literature and language, math, and singing. I am just about equally left and right brain. I like knowing people's thought processes and trying to solve problems. I like people but also usually shy. I can sing really well but my speech is usually mumbled. Any careers you know of that fit these together?

Maybe accounting? You talk to people a lot and solve their problems, but it's on a one on one basis rather than talking to several people a day.

It sounds like you could also be a therapist or designer.

How about doing art therapy? It's a child psychology field, I think.