“The difference between successful people and really successful people is that really successful people say no to almost everything.” –Warren Buffett
“Whenever you do any one thing intensely over a period of time you have to give up other lives you could be living. You have to have a real single-minded kind of tunnel vision if you want to get anything significant accomplished.” –Steve Jobs
“People who are successful are often—but not always—pretty fanatical about the thing they’re planning to do.” –Bill Gates
“I think the world's best companies are built by fanatics. [That means that you] work day and night. Sort of don't worry about the possibility of failure. Every setback is just something to work a little bit harder at doing. And you really know what you're trying to achieve. And you're going to hire the best people. And you're going to change your strategy until you can get that to happen.” –Bill Gates