One quality separates the most successful business owners from all others, according to billionaire Jimmy John Liautaud: They work really, really hard. In that vein, the 61-year-old founder and former chairman of the Jimmy John's sandwich chain doesn't believe in work-life balance, he said in a TikTok video posted by The School of Hardknocks on Oct. 9. "Work-life balance [for entrepreneurs] is the biggest line of bulls--- that's ever been created," he said. "There's no such thing as work-life