Majors: I switched from software engineering to math and classics and later to linguistics. If I had the chance to switch again, I would switch to neuroscience. If something called passion really existed at some point in my life, it might have been watching and reading people.
Fields: I had done countless part-time jobs in education consulting. But that never became my job, and what I enjoyed most as a job was operations roles in venture capital. I once built a community deal-sourcing program from 0 to 1, with the result that lots of entrepreneurs spontaneously came to us. Recently I'm diving into healthcare and building on top of what I had.
Investment: I declined a $700K investment a few years ago. I had few days to decide between accepting that offer and going back to school, and that had been a real struggle. When offers like this came to one at a young age, they appeared too tempting for one to say no. Trust the gut.
Decisions: As time grew, I learnt that there are no "right" or "wrong" decisions. Each decision just had its own consequences, and we had different problems to solve. When I navigated between working in a top-tier VC and going to a PhD program, I got largely confused, and I had probably made a decision thus far the worst in my life. That remained a puzzle.
Compromises: Compromises are tricky. It always took me a hundred years to give up something (not the case for my majors though), while sometimes compromises forced me to do it. I had to clear my old stuff before starting a new endeavor. But in general, I hate compromises.