Trust your gut instinct over spreadsheets. There are too many variables in the real world that you simply can't put into a spreadsheet. Spreadsheets spit out results from your inexact assumptions and give you a false sense of security. In most cases, your heart and gut are still your best guide.

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.

Success is not how much money you have in a bank. Success is how many lives you have touched.

Stay focused on the mission.

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 worked for Microsoft until 1996, till I had a different angle to view life. I wanted to be an entrepreneur and control my own destiny.

Think so big, so audacious that people will think you are crazy.