Think carefully about which cards you draw and discard; they should complement your overall plan. Avoid throwing away cards that might enable your opponents to finish their own melds, for example, if you are gathering cards to create a run in best new slotshearts. A crucial component of creating a winning hand is maintaining your flexibility in your strategy. Your original plan may need to be modified as the game goes on, depending on the cards you draw or what your opponents do. Being able to change course & modify your approach can provide you with a big edge. For instance, it might be a good idea to start collecting sets or change your attention to a different suit if you observe that your opponent is amassing cards in that suit.
tash