Often people base their decisions on their life experiences. The mind perceives events as interconnected and ignores the fact that they can happen "by chance.
Imagine the experience of flipping a coin. If 9 times in a row heads roll, it is logical to assume that on the 10th it will be tails.
It seems that the more often one event occurs, the greater the chance that the opposite will happen next time. In fact, this is not the case.