Kevin O'Leary isn't interested in your excuses—especially the ones wrapped in a bow. In a 2020 interview with CNBC, the "Shark Tank" investor didn't just suggest setting money aside. He issued a directive. "I don't care if it's a gift for your birthday present," O'Leary said. "You have to take 10% of your paycheck every two weeks and invest it." Paychecks, birthday cards, cash from your side hustle scooping ice cream—it all counts. If it lands in your hands, O'Leary expects 10% of it to be out the door an ...