"Both poker players and investors must be impartial and well-acquainted with risk...
The most successful poker players and investors know what it feels like to take a serious risk, and they don't let it rattle them too much. Maybe they’ve even "pushed the rent money into the middle of the table," Brown says.
"People who haven't had that experience find it very difficult to separate the decision from the result," he said. In other words, both gamblers and traders must be able to judge their decision-making process impartially and understand why it worked or didn't..."