Mental game encompasses all psychological aspects affecting poker decision quality: tilt, fear of money, overconfidence, results-oriented thinking, and the ability to maintain composure during extended downswings. Jared Tendler and other mental game professionals categorize problems as emotional tilt (anger, frustration), ego tilt (contempt for opponents), and anxiety tilt (fear of losing). A solid mental game does not eliminate emotions but enables the player to recognize when emotions are affecting decisions and apply redirection techniques. Continuous mental game improvement is as important as technical study for sustainable long-term winrate.