The problem that often occurs for most gamblers is because they don't realize that greed is what drove them to loss. Therefore I agree that
the most important thing in playing gambling is how to control our greed. Because this is what triggers a loss initially to spend all the capital
you have, only to get a win when playing gambling.
Sometimes it is not greed though but also a fear to lose more. Chasing losses as they say, so this is very different from greed where the motivation is to make more profit. Many more players lose because they want to chase back their losses thinking, I have already lost so much,,, surely my good fortune must be just around the corner? They forget that random probability has no memory.