In order to reduce the value of the cards you discard for other players, you should also be strategic in your discarding decisions. For instance, it coulrummy good appd be a good idea to discard high-value cards early in order to keep other players from using them if you don't think they will form sets or runs in your hand. Holding onto low-value cards until later in the game, however, might be more advantageous if they are unlikely to be useful for completing melds.
