I can relate. However, it's more of low self-esteem and the fear of failure. I stopped school because I was bored. I changed jobs a few times until I find comfort in working at home. I know I enjoyed tutoring then but the pay is not enough. I tried photography to hopefully make it big but I can't handle the socializing. It's still a hobby though although I can't say it's my passion. Finding passion is what I lack. I think I don't have one. I'm not that challenged. I take things as they are not with apathy but with acceptance that that is just the way it is.
One of the reasons I found acting wasn't for me is the demand for networking and socialising. Not one of my strengths either. Glad for you that you've found a mode of working that fits you. Fear of failure is definitely something that affects many people - me included. I think it's a big reason behind my tendency to procrastinate. It takes guts to jump straight into a big project when you're scared you're going to mess it up!