Definition of “bad run”
The poker is a game of variance. In the long run, we will receive the same proportion of AA as 22, 55 or 77, but in the short run, it is possible that our set of cards will be atrocious. In addition, it is also possible that even when we have AA, we may lose the hand against a pair of 2's who hit their three of king to flop. When you don't have a good starting hand, your straights lose to flushs, your KKs meet AA and your straights get beat by better three of king you're in a "bad run" period.
More about the "bad run".
The bad run is something that happens to 100% of players of poker. If you are lucky, these periods will be short and you will get away with it without too much damage. If you are less fortunate, the periods of bad run can last for months or even years. The amount of gambling you put in will also have an impact. If you play 1000 hands per me, your bad run period could be longer than if you play 2000 hands per day. The important thing is to stay Zen in these difficult times.