Even the most experienced poker players can lose a bundle from a bad beat or a bad call. The last thing you want to see is your hard earned poker winnings vanish. You can avoid losing too much money playing poker by having discipline and self control. In a poker tip from Aaron Bartley, he explains how to ensure that this situation does not happen to you.
"The most important step is to be honest with yourself. You should know your relative skill level at all times. Suppose you're a $1/$2 No-Limit Hold 'em player who's had a great night, and you're toying with taking a shot at the $5/$10 game. Your bankroll is up to $1,500, but you would need to bring at least $500 to the table in order to play comfortably at the higher level.
Why would you risk putting a third of your bankroll on the table to play in the $5/$10 game? For starters, your bankroll isn't big enough for the stake; more importantly, you also need to consider that the skill level of the $5/$10 players is greater than the competition you're used to. (That's not always true, of course. There are some very skilled $1/$2 players and some weak $5/$10 players, but it's not unreasonable to assume that the higher-level games are filled with better players.)
This is where self-control comes in. One slip-up can spell disaster for a bankroll, and watching six months of hard work disappear in six hours of foolish play is enough to crush anyone's spirits."