1. Never invest in businesses you don’t understand. In his blog, Cuban writes that it’s ok to do nothing. So, if you don’t understand the business, don’t invest.
2. Control your emotions. In Cuban’s book, “How To Win at the Sport of Business: If I Can Do It, You Can Do It,” he writes that fear is the enemy of success.
3. Analyze your spending habits. Cuban writes about a concept called transitional returns. He encourages readers to examine their spending habits and buy bulk when possible.