interesting fact of the past centuries

read in the book by Y. Shcherbatykh `` Psychology from A to Z ''..
turns out to be the great Russian literary creator of the past centuries Nekrasov – was an avid gambler.. and with a stable positive expectation.. already then, several centuries ago, he understood, what is the main thing in the game – it is to master your emotions, and also sit down at the table with a sum of money, which he was ready to lose so, so that the next morning not even remember the loss. and he always kept that `` stop '' in his head" beyond which it was impossible to lose…