Kevin Hart is the highest-earning stand-up in the world right now, and the next highest — Jerry Seinfeld — isn’t even close. Over 16 months from September 2017, Hart’s Irresponsible tour filled 119 arenas around the world , including six in the UK. Meanwhile, as an actor, his prolific output of comedy blockbusters such as Ride Along and Night School have made more than $4 billion at the box office. “I’m extremely attracted to business,” he tells me, adding later that he thinks he could be a billionaire by the time he’s 45. He turns 42 next month and is worth $200 million, so he has some work to do. But work is his thing and he lacks neither confidence in his abilities nor motivation.