The cards you're dealt in rummy are dynamic, so they could be different every time you play. Success in rummy depends on your ability to modify your plan of action in response to your opponents' moves and the crummy howards you currently possess. Maintaining Alertness and Concentration. In order to make fast decisions and maintain an advantage over your opponents, you must remain attentive and focused throughout the game. You can boost your performance and your chances of winning at rummy by keeping a winning mindset. In rummy, there are two basic actions that can significantly affect the result of the game: drawing and discarding.