If your opponent needs that card to finish their melds, discarding it can give them opportunities. Thus, it's critical to consider both your hand and how your discards might affect the hands of other players. As a general rule, yrummynou should discard high-point cards if you are certain they don't add to your current melds. Instead of risking keeping a high-value card until the end of the game, it might be prudent to discard it if it does not fit into any possible melds. On the other hand, if you possess a card that might aid an opponent in finishing their melds, think about keeping it longer or strategically discarding it when you think it will have the least effect on their hand.