Do you think it is an essential virtue for the game of Poker? And if you didn't have this virtue, how would you manage to cope with it and get better results in the game?
Of course patience is one of the most important virtues to play poker, if you do not have it you will not last long in tournaments and you will not make good decisions in your game because you want to obtain results very quickly based on emotional decisions.
With patience you can better analyze your game and your opponents, you can also wait for a good moment to double down on your game, waiting for that opportunity to go amassing chips little by little without haste.
If you are one of those who do not like to play long tournaments due to lack of patience, it is better that you play sit & go of 18, 27 or 45 players that are short or play turbos tournaments if you are an aggressive loose player.