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a subtext of that advice, don't play too big

you don't feel curious if you bet your house on a poker game, but 50 bucks you get to enjoy the downfall

Risk management is the most important life skill, with rhetoric (persuasion) being a close second. If your risk management is sound then you can play as much poker or options trading or futures or any other hairbrained dipsy-doodle you like. But if your risk management isn't sound then you can still lose everything in a game (broadly construed) with an edge < 1 in your favor.

do you have suggestions on books or others ?

"Skin in the Game" by Nassim Taleb

The Kelly criterion[1] is a good starting point. When it was run as an experiment, a game with a .6 player edge had 28% of players go bust.

[1] https://en.m.wikipedia.org/wiki/Kelly_criterion

And just to add:

> If the bettors had followed the Kelly bet, 94% of the participants would have been expected to reached the cap [of $250 after starting from $25]

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