The first principle is that you must not fool yourself, and you are the easiest person to fool.
What advice would you give to a smart, driven college student about to enter the ‘real world’? Work harder than everyone else. Of course, that is easy when you love your job. But you might not love your first, or second, or even third job. That doesn’t matter. Work harder than everyone else. In order to get the job you love or start the company you want, you have to build your resume, your reputation, and your bank account. The best way to do that: Outwork them all.