The classic problem as an entrepreneur is that they have a hard time delegating. But that's really crazy. Recruiting other executives is critical, so is dealing with customers and dealing with regulators. Those are functions that only the top founders can do.

I am a great believer in the OHIO principle: Only handle it once. When you read an e-mail, decide whether or not to reply to it, and, if you need to reply, do so right then and there. I have found that about 80 percent of all e-mails, whether internal or external, do not require a response.

The night before, go over your schedule and see what you're going to do and what the purpose of what you're doing is. I advocate having a two-column schedule. On the left, put down all your appointments and phone calls. On the right, put down what the purpose is.

I'm used to being productive, ever since I was young.

You need to agree with your boss about what you need to get done that week, what are the metrics of success. Sometimes you need more hours, sometimes you need fewer hours.

I've seen people spend days, if not months, researching and gathering data, but only at the end did they finally figure out what they were really looking for; then they have to redo a lot of stuff. If after a day or so you force yourself to put together your tentative conclusions, then you'll have guidance for the rest of your research.

No matter what your career aspirations are, you should begin by thinking carefully about why you are engaging in any activity and what you can expect to get out of it.