I feel like mahjong falls off hard once you finish learning it. Then it feels like you're just doing the same correct discards every game and it's just sitting there waiting to call the last piece OR NOT. Half the games you are painfully aware you have a shit hand and will just be correctly discarding while the hand slowly counts down to zero. Wanting to win feels like "I hope the people match against me have less understanding of the rules so they incorrectly discard and make weak hands so I can win".
TLDR I Jong'd too hard and now the Jong don't feel good