Definition of bankroll management
To be a player of poker winners, you must have the necessary technical knowledge, you must be creative, you must have a good management of your emotions, but you must also have a good "bankroll management" that is to say a good management of your money reserved for the poker. There are fairly simple rules to manage your bankroll. For cash game players, a minimum of 20 cellars is necessary. If you lose a lot, play at a lower limit. For tournament players who would have a bankroll of 1000 euros for example, they would be encouraged to play tournaments at 10 euros maximum (it also depends on their level of play).
Bankroll management and tilt
One of the main reasons for players not respecting the 10 is probably the tilt. A player sets the right rules for a healthy management of his bankroll and suddenly, after a big downswing, he loses control of his emotions, goes into "on tilt" mode and decides to raise the limit to "recoup his losses", which is never a good idea. Arbitrarily raising the limit without knowing if you have the knowledge to beat the limit and being emotionally upset by previous losses makes for a bad cocktail.