Not paying attention to opponents' discards is a common mistake. Ignoring this part of the game can result in lost chances for strategic advantage; if you don't watch what other players are discarding, you might unintentionally keep cardrummy all 51s that are useless while giving opponents an easier time to finish their hands. You will be able to make better decisions throughout the game if you make it a habit to keep an eye on discards. Getting too attached to particular cards or combinations is another common error made by players. It's normal to want to hang onto valuable cards or cards that look promising at first, but doing so too firmly can make it difficult to modify your strategy as the game takes place.