The worst moment for me is when there are only a few left to enter the prize bubble and you have few chips and the system gives you a very strong hand, they can be AA, KK, QQ Etc... where they encourage you to play but when you play it you are taking a risk too much since at your table everyone has much more chips than you, that moment of poker is the one that stresses me the most is entering the bubble with a good amount if you decide to bet everything and win or lose everything when playing that table, the other option is wait for the others to be eliminated before entering the bubble but in that the percentage of losing is 60/40 against and entering the bubble being one of the last but winning something.