How to quit a poker game
Unless you play tournaments exclusively, there is no outward indicator letting you know when to quit.
Unless you run out of money or obligations in the outside world pull you away from the table, you could probably sit there indefinitely.
There are two main times people have trouble getting away from the table -- when they are winning and when they are losing.
How to Quit a Poker Game
Quitting "Winner" in Poker
Winning in poker is a great feeling. It seems like you can do no wrong and playing while watching your bankroll rise is tremendously fun.
However, when is it time to take your winnings and run?
You could be right in the middle of a huge winning streak or right at the end of it. There's no way to know.
One thing you can do is set benchmarks for yourself. For example, you might say that every $500 you win you will take a moment to sit back and reevaluate.
Are you still playing your best game? Are your opponents still players you can beat? If the game is still good and you are still at your best, play on.
If things seem to have changed, consider calling it a night.
Quitting "Loser" in Poker
Some players have a great deal of trouble quitting when they are down money. They are sure that things will turn around and they can get "even," and they will not leave until they do.
This can often result in much bigger losses than originally intended.
It's a good idea to come into the game with a limited amount of money and pledge not to lose any more.
If you come into a game with three or four buy-ins available to you and you lose them all, it's better to accept that it's not your night and come back to the game another day, when you are refreshed and your mind is clear.
Remember that the game will always be there when you are ready for it.