Your ability to concentrate single-mindedly on one thing, the most important thing, and stay at it until it is complete, is an essential prerequisite for success.

You always think in terms of customer benefit. You always think, "How could I really benefit people at such a high level that they would love to buy my product or service and recommend it to others?"

Destructive criticism is the biggest single enemy of human potential. It is worse than cancer or heart disease. While those diseases can ultimately lead to the deterioration and death of an individual, destructive criticism kills the soul of the person but leaves the body walking around.

List 20 things you are going to do in the next 30 days to fast-start your career. Then take action on at least one of them.

So many people spend so much time on things that aren't important. It's the difference between success and failure.

Be more concerned about what's right rather than who's right.

Your solution for a customer has to be either amazingly valuable to someone who will pay an enormous amount of money for it or has to be valuable to an enormous number of people who pay a small amount. And also the person you're talking to-especially if you want to raise capital or raise support-has to personally say, "I want that. I like that. That sounds really great. I want that for myself."