Companies should always want to delight their customers.

It's a very valuable skill to succeed in life whether you work for a startup or a Fortune 500 company.

In giving presentations, use the 10/20/30 rule....use only 10 slides, take 20 minutes maximum, and use at least 30-point fonts.

Let yourself be enchanted in small ways.

Most of my life is over. I am going to enjoy my family and friends before any of us depart this earth. I'll never start another company. I'll never work long hours again. At this point in my life, I only answer to God, my wife, and my kids. Everything else is secondary - especially the expectations of strangers.

At the end of the day in business, it's not about peer review and getting into a scientific journal. You either increase sales, or not.

Pursue joy, not happiness. This is probably the hardest lesson of all to learn. It probably seems to you that the goal in life is to be happy. Oh, you maybe have to sacrifice and study and work hard, but, by and large, happiness should be predictable.