Honestly? Careers in general.
My parents are very much the KEEP CLIMBING THAT LADDER types. Constantly working, constantly moving from house to bigger house, constantly seeking more. 90-hour work weeks, ten thousand projects to improve the house, etc etc. Everything they had, they put into work.
For a long time, I bought into that as well. The whole bit: STEM major at a good college, member of five different clubs, honors society, part-time volunteer work, my own self-coded website, ambitions on top of ambitions. I was going to be the fruit of all their labor, and if I wasn't working, I was dying.
And I fucking HATED it. I hated never feeling like I was ever doing enough or being enough. I hated doing science. I hated constantly critiquing and bullying myself into giving 110%, all the time. I hated how any failure or 'laziness,' however small, became an immediate spiral of self-loathing. I hated how my actual interests were constantly pushed aside in favor of "building your career path" or "preparing for your future." Finally, a good friend of mine committed suicide due to stress related to our studies, and I stopped and took a look at what the hell, exactly, I was doing. I realized I had no end goal--I was doing this because it was expected of me, nothing more.
So I dropped it, and I did what I actually wanted to do. I switched my major to English, even though it's a 'useless' degree. I moved to Seattle to be close to a couple artist friends I knew and admired. I met a cute artist girl and started dating. I wrote a book. Then I wrote three more books.
Now? I've started learning how to balance ambition with being at peace with yourself. I work at a cute bakery because I realized I really like baking. I get home in the early afternoon and write about a thousand words, then play with our cat. I have dinner with my partner when she gets home. I help her set up her art for conventions.
It's not that being an artist-type is inherently lazier than being a STEM major; in a lot of ways, I'm working just as hard as I was, especially when I have to hit a deadline. But I'm doing it because I WANT to, and I'm letting myself be satisfied with what I have. And that's okay.