BillionaireBill Gates is best known for co-founding technology giant Microsoft, which is now a multi-trillion-dollar company. It turns out that Gates had to stop a bad habit along the way to be successful. While an undergraduate student at Harvard University, Gates has a bad habit of procrastination. “I liked to show people that I didn’t do any work, and that I didn’t go to classes and I didn’t care,” Gates said in a 2005 Q&A session with Warren Buffett, as reported by CNBC. Gates said he would prepare for tests at the last minute. “People thought that was funny. That was my positioning: the g…