The first job I felt attracted to was lighthouse keeper, which is odd, because I later had a lot of worries about cabin fever. After primary school, all my friends went to the tech high school, but my parents pressured me into going to the academic one, so I had thoughts about becoming a shop teacher. I have a friend who is now retiring from that, and I've helped him in class. I don't think I could have handled the constant interruptions.
My overriding life plan was to help change the course of history, to avoid a nuclear war. I got kicked out of home at 17, since my parents had divorced, and no longer cared about appearances. I did silversmithing for a while - I worked 14 hour days for months before I noticed that I'd gotten so absorbed. Then I volunteered for a group that was offering free meditation lessons until I was 27, and it had turned into a cult.
I decided that designing Human Powered Vehicles was the best way to express the range of my talents, and went to the library to learn the relevant engineering. My first prototype was a great success, with many innovations, and I expected it to attract business partners. Lots of potential customers showed up, but the partners just wasted my time and drove me crazy. I got sidetracked into pedal boats, again winning prizes, but I realized that my work was not actually saving any oil.
Now, I'm on government assistance, but thinking of a very small business making a low-demand tool. I can't afford a patent, but I might not get ripped off if I'm just in a niche market. Mostly, I enjoy working with someone who shares enthusiasm for the job, but that has been rare. The best gig that way was doing massage. People loved my work, and it didn't interfere with my other thinking. I was working at a big spa, which kept it simple for me.