I still remember some losses that i really haven't gotten over, not like they were huge amounts but they were rare cases of near suuccess syndrome, i was very close to winning, and the reason why it turned into an unforgetable experience is the fact that i was given some good amount to cash out, but i turned them down and still ended up losing the whole thing, such losses are pretty hard to forget or move on from.
I've also had similar experiences like this before, and you are damn right those experiences are hard to forget, but the best part of those experience is that it has thought me some valuable lessons about being too greedy and wanting to take the whole cake when you can just take a few slices and still be happy you had some at the end of the day, rather losing everything on a quest to take everything.