Maintaining Concentration on the Game. Observing which cards other players are picking up and discarding is crucial because it can reveal important information about theionline slots freer hand and strategy. Tracking the cards you have in your hand and choosing which ones to keep or discard are other essential components of maintaining focus. You can predict your opponent's next move and decide on a course of action by remaining concentrated on the game and paying attention to their movements. The Value of Perseverance.