Patrick Bet-David's core money habit is simple — always aim to double what you have — a mindset that is useful for savers but risky when applied to betting.

• The rule: turn $10 into $20, $20 into $40, and keep repeating at every level.
• He traces it back to childhood, then to blackjack, where he doubled his bet after every loss.
• That betting version is the classic martingale system: it works until a long losing streak wipes you out, which he admits happened to him.
• Casinos also spot the pattern fast and shut it down.

Outlook: The doubling mindset is a solid goal-setting frame for building wealth, but the gambling version of it stays a fast way to lose everything.