Titans of Silicon Valley and Wall Street are setting the record straight: clocking in at 9 a.m. and throwing in the towel by 5 p.m. won’t get you to the top of the C-suite. Much to the dismay of Gen Z striving for success with a manageable work-life balance, CEOs are adamant that intense schedules are essential for anyone looking to make it in business. “This notion that somehow you can achieve greatness, you can build something extraordinary by working 38 hours a week and having work-life balance, that is ...