"It's good to learn from others, so you don't have to learn expensive lessons yourself"

I read this quote long ago, and I have been learning from others ever since  

I know people irl who destroyed themselves/their families by gambling activities, there is this story of Mahabharta [1] where king Yudhisthira was led to ruins by gambling — so what saved you from doing stupid in gambling?

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Quote from: [1] https://en.m.wikipedia.org/wiki/Sabha_Parva

The last two parts describe the one vice and addiction of the virtuous king Yudhishthira – gambling. Shakuni, encouraged by Duryodhana, mocks Yudhishthira and tempts him into a game of dice. Yudhishthira bets everything and loses the game, leading to the eventual exile of the Pandavas.

"It's good to learn from others, so you don't have to learn expensive lessons yourself"

I read this quote long ago, and I have been learning from others ever since 

I know people irl who destroyed themselves/their families by gambling activities, there is this story of Mahabharta where king Yudhisthira was led to ruins by gambling — so what saved you from doing stupid in gambling?