I'm reminded of (I think?) one of Paul Graham's essays on the difficult and rewarding things in life – that if you knew how difficult it would be, you might not

I'm reminded of (I think?) one of Paul Graham's essays on the difficult and rewarding things in life – that if you knew how difficult it would be, you might not have done it? You might not have started. I don't know... sometimes, there are those things that might be difficult and then not worth it. It strikes me that to be a professor, you have to be a little out of it, maybe even a little psycho.