What's a good career for me?

I'm sure you've heard people tell you "do what makes you happy" or "do what you enjoy doing" so let me tell you all that is bull. Doing what you like to do and/or makes you happy doesn't pay the bills. You can spend years looking for the perfect field of work, and if you do find it, good for you. Most people, however, will not find the world's perfect job. You need to settle on something. Based on what you specified above, you will either need to find something you enjoy doing but aren't very good at or something you're good at but don't enjoy doing. You will be more successful career-wise if you chose the later. I would've suggested university professor before you dropped the whole thing about working with people.