alt Hacker NewsYea solving hard problems can be quite enjoyable, but can easily become a burden on your mind/body over time. When you're clearly making progress, then everything feels wonderful even if it's challenging. But when you're stuck, when your code/model isn't working as designed, if there is a clear gap between your current state of understanding and the amount required to solve the problem effectively, then you can fall quickly into despair. It's made worse when you see others doing similar work to what you do, but being far more successful at it. And made even worse, when you tie parts of your identity to the problem you're trying to solve, and the code you write. But that's the nature of what you're trying to do, so it isn't all bad.
Absolutely, I've been stuck on one problem for years now (why I haven't just abandoned it is another matter, the long story short is that I just can't) and yeh, like you say, I've been in some deep pits I can attribute to that, and I do find myself, especially but not always in those times, looking at others in the same field doing so much better seemingly effortlessly. But those times I get a glint of a solution, even if it doesnt end up becoming anything, are incomparable to any other hobby I've ever had. Whether thats worth it is up to the individual I guess, but I think for most people, when they find "their thing", it usually is, or at least isn't something they can choose not to do.
Can't have the rainbow without the rain as they say