The real metric of success isn't the size of your bank account. It's the number of lives in whom you might be able to make a positive difference.

I started off with a company, InfoSpace, with my own funding. The company was listed among the most successful companies and I went on to start Intelius and Moon Express. Now, I focus my time on using the skills of an entrepreneur to solve many of the grand challenges facing us in the areas of education, healthcare, clean water and energy.

Being a father has been, without a doubt, my greatest source of achievement, pride and inspiration. Fatherhood has taught me about unconditional love, reinforced the importance of giving back and taught me how to be a better person.

Athletes at all ages are bigger and stronger than ever before. And they are being encouraged - sometimes even incentivized, as we recently learned was the case on at least one National Football League team - to play to injure.

When I finally had the chance to make my childhood dream a reality - as a co-founder and chairman of Moon Express - my goal was to broaden participation in lunar exploration, and connect the common person to its results. We plan to send robotic rovers - not humans - to the Moon to search for precious metals and rare minerals on the Moon's surface.

Because I was poor I had one special advantage. When you are poor, and basic survival is your concern, you have no alternative but to be an entrepreneur. You must take action to survive just as you must take action to seize an opportunity.

Teaching children about entrepreneurship is much like imparting any other skill or piece of knowledge. You will provide them with ways to experience how entrepreneurship works, and you guide them toward the subjects or areas they seem to show an interest in.