Mark Cuban reveals he only uses E-MAILS to run all his businesses, no meetings or phone calls "It's got to be an email." "So, a lot of people ask about my daily routine and you're going to be shocked. I look at my phone or I'm looking at a laptop and I'm on there 8, 9, 10 hours a day." "Am I going to meetings? No. Am I taking phone calls? No. Am I going to some office somewhere? No." "When I was working my way up, I always had to work to somebody else's schedule. When I finally sold my companies and had enough money to stand on my own, prior to getting an iWatch, the first thing I did was get rid of a watch. I didn't wear a watch for 30 years because I didn't want to be on anybody else's time." "And now, finally, because people pretty much kiss my ass when it comes to business, I can tell them I'm doing everything via email. Period end of story. And because of that, I can get everything done by sitting on a laptop or a phone anywhere in the world and that works out really well."