I care about what people think about me, and I try to look my best, and act my best, but I really don't care about what people think of me. I think I just realised that it doesn't matter what people think of you; you just need to be yourself.
I don't think I will ever stop "caring," but about 6 or 7 years ago I "really" realized (knew in my gut) that whether they thought well of me or less favorably of me was a comment about their limitations, not mine.
I would want to sing as well as the teacher I had. With that in mind, I would choose either Josh Turner or Josh Groban to be my instructor. Oh to sing like either one of them!