Gambling, that should be another word for taking risk by putting something at stake, Because I don't really understand why someone will call him/herself a gambler, and be too scared to take the risk. It definitely require you to make guesses based on certain criteria that you might think can give you the win.
But I personally think that it is best to have the pain for taking the risk, than to have the regret for not taking the risk. Gambling is never a win-win situation, we lose some and win some, because our trials/predictions are not always right.
Everybody that gambles are in competition for a particular thing/price. It will certainly go one way, because we can't have everyone as winners, or everyone as losers. But, it is ideal for us to stake what we can afford to lose. Reason why some people tend to stake and risk massive amount is because they understand how massive the reward can also be, compared to when a lesser amount is staked. But regardless, I still think it's ideal to stake what we can all afford to lose, which I think will put us in the middle of risk and regret.