Also, it's critical to monitor which high-value cards have been discarded because this can provide you with important insights into which cards remain in the draw pile. Ultimately, itsattakingtoday takes keen observation and deliberate planning to keep track of discarded cards. You can make wise choices about which cards to keep in your hand and which to discard by observing patterns in what other players are discarding, avoiding picking up deadwood, and keeping track of which high-value cards have been discarded. The Art of Neutral Expression: A Mastery.