If you search the term “variance” on Wikipedia, you will get the following definition: “the variance is a measure of dispersion or variability that indicates the extent to which the values differ from a central value.”
Applying this definition to a poker tournament, the variance is the value for which is not always really flows. There will be tournaments where you get a good run. You get cards like manna from heaven and the chips of the opponents migrate as it almost by themselves to you when betting.
On the other hand, there are clearly also tournaments where everything goes wrong. If the game will be good or bad you will not ever know in advance. The cards come down randomly. In this regard, many players make the following error: respond in an excessively emotional to the possibility of being on the positive side or the negative variance.
Also you’ll definitely tried once the feeling that you felt to say: “Today it’s all like crap …”.
If you want to win a tournament, however, is extremely important to accept the variance as part of the game and learn to live with it. Independently and in a tournament all went well or badly, you should always focus to take the best possible decision in the next hand.
Assimilate this principle is a prerequisite to win in poker tournaments, as well as having a strategic advantage (called edge in poker parlance), you will be even higher on a psychological level towards the opponent.