Like most successful entrepreneurs, Bill Gates success came from a combination of hard work, intelligence, timing, business sense, and luck. Gates constantly challenged his employees to work harder and innovate, but he also worked as hard or harder than the people who worked for him. Gates also wasnt afraid to take risks. He took a risk when he dropped out of Harvard to start his own company. He also took a risk when he changed Microsofts operating system from MS DOS to Windows. However, his risks were calculated. He had confidence in himself and his product.