Like Mark Cuban and Barack Obama, this founder says work–life balance doesn’t exist for the successful: ‘Even if I am on vacation, you’re on 24 hours a day’

Finding success in entrepreneurship takes nothing short of hard work—after all, close to 20% of small businesses fail within their first year of operation. However, even a decade after founding his company, one founder admits to Fortune that work-lif… [3106 chars]