Analyzing Your Rivals. The key to cultivating a winning mindset is to keep an eye on the cards that your opponents have discarded. By keeping track of these cards, you can lea213rn a great deal about the cards that are still in play and use that information to decide which ones to keep & which to let go of. The cards that are taken from the discard pile should also be taken into consideration as they may reveal information about the sets and runs that your rivals are attempting to construct. It all comes down to patience.