Players all have moments when they get reckless and let egos grow way more significant than it has to be. This often happens when players want to maintain an individual image or when they want to show off.
This behavior usually has adverse effects that will be felt in the pocket. Therefore, it is imperative that when playing, only the brain is added into the equation and not the ego or temper.
Certain rich players play on people's egos, which often goes wrong because the opponents often bet more money than they can afford and end up losing it.