A scientist. It's never going to happen because I'm 72. At school I was pushed into languages, history etc because I wasn't good at maths. I was good at general science though, especially chemistry, and I enjoyed it.
After I retired I took up beekeeping and have lately rediscovered my love of science. I have two microscopes and am studying bee anatomy and pollen identification. There's an exam later in the year for a certificate that will open further areas of study, but I doubt my skills are up to the challenge (eg dissecting a bee in front of the examiner). However, I am really enjoying the whole process of making slides and examining them. I would have loved doing this as a job.