You learn that you can never not work. If you really want to make it to the big leagues, there's no such thing as "I'll start this first thing Monday" - you gotta do it now.
You have to find the line between working hard and being a workaholic. I know a lot of those bigger-name guys are workaholics, and I don't know if I want to go that far. One day I would like to have a relationship and a normal social life, so it's all about striking that balance.