What are the best careers for people who don't like people?

I love to work & I love earning money, but I've had 8 full-time jobs in 7 years (not including temp ignments). Part of the problem is that I get bored after I have learned what's involved & I hate repetition. The other problem is that I work best when I'm busy, quiet & at ease and I find that working with & for others stresses me out to the point where I have been physically ill, so I remove myself which makes it worse so then I quit. Talks w/HR don't help. I can't stand pettiness and gossip nor people who have nothing better to do than to try & sabotage someone's career. Most of my gigs have been in advertising production for publishing, broadcasting & internet. I've also worked in hospitals or clinics & law firms-apparently I hate working in an office. Now I am in grad school to become a teacher but it's not the right fit. CAREER COUNSELING DID NOT HELP. What are the best careers for people who are creative & sensitive but don't like working with people? Serious replies only.