Glossary

The Poker Mental Game Glossary

Plain-language definitions of the terms that drive the mental side of poker: tilt, variance, bankroll, stop-loss, and more. Every definition stands on its own, and some link to a deeper guide. OctoCoach is a coaching and session-journaling tool; it does not host games, take deposits, or involve real money.

Every term here is also something OctoCoach tracks or coaches in your own sessions, from tilt catches to stop-loss discipline.

Tilt

Tilt is a stress response that hijacks your decision-making at the table: a trigger fires, your body shifts into fight-or-flight, and careful long-term thinking gives way to fast, ego-driven reactions like revenge calls and chasing. It is the most expensive leak most players have.

Full guide: How to stop tilting in poker

Variance

Variance is the natural short-term gap between how well you play and what you actually win or lose. Good decisions lose sessions and bad ones win them; variance is why. The mental-game skill is staying emotionally stable through swings your strategy cannot prevent.

Bankroll

A bankroll is the money set aside strictly for playing poker, separate from living money. Bankroll management is the discipline of choosing stakes and session limits so that normal downswings never threaten the whole roll; the math is simple, and following it is the mental skill.

Full guide: Bankroll management is a mental skill

Stop-loss

A stop-loss in poker is a pre-set limit on how much you are willing to lose in one session, decided while calm, before you sit down. A common cash-game stop-loss is 2 to 3 buy-ins. Its job is to end a bad night before tilt turns it into a disaster.

Full guide: How to set a stop-loss and stick to it

EV (Expected Value)

Expected value (EV) is the average result a decision would produce if it were repeated many times. A +EV play makes money in the long run even when it loses tonight. Thinking in EV instead of single outcomes is the core mental shift that protects you from result-oriented tilt.

GTO (Game Theory Optimal)

GTO is a theoretically balanced strategy that cannot be exploited no matter how opponents respond. Studying GTO builds strategy; it does not build the discipline to execute it under stress, which is why players with perfect ranges still lose to tilt.

Downswing

A downswing is an extended losing stretch that persists even when you are playing well, produced by variance rather than mistakes. Downswings test the mental game more than the strategy: the danger is not the losses themselves but the chasing, stake-jumping, and confidence collapse they trigger.

Life tilt

Life tilt is when stress from outside poker, work, relationships, money worries, sleep debt, quietly degrades your decisions at the table. You sit down already at a 6 out of 10, so a normal bad beat pushes you over the edge that a rested version of you would absorb.

A-game / C-game

Your A-game is how you play at your best: focused, patient, disciplined. Your C-game is how you play at your worst: tired, tilted, autopiloting. The gap between them, not your peak skill, decides your real win rate, because most money is lost in C-game hours.

Cooler

A cooler is a hand where two very strong holdings collide and the money goes in with nobody making a mistake, set over set, flush over flush. Coolers are unavoidable and unpreventable; treating them as anything other than a math event is a fast route to injustice tilt.

Running bad

Running bad is a stretch where the deck simply does not cooperate: draws miss, big hands get outdrawn, and premium cards stop arriving. It is variance, not a message. The mental-game response is to tighten up and shorten sessions, not to force action to "make something happen."

Bad beat

A bad beat is losing a hand after the money went in while you were a clear favorite. It is proof the game has variance, not proof you played wrong: the chips going in good was the only part you controlled, and you did it right. Bad beats are the most common tilt trigger.

Full guide: How to deal with bad beats