Excellent comments but I feel #2 is only more relevant than other 2. Professor Sarasvathy explains the “Bird-in-hand principle, which is Start with Who you ar

Excellent comments but I feel #2 is only more relevant than other 2. Professor Sarasvathy explains the “Bird-in-hand principle, which is Start with Who you are, What you know and Whom you know. Number 1( Product Ideas) can be found after brainstorming. StumbleUpon was started by Garrett M. Camp( Co-founder of UBER) and they simply filtered this idea out of 6 ideas. Number #3 is related to how resourceful you are. Mark Mark Zuckerberg did not have any money when he started Facebook. Nowadays technology is almost free so why you need money. If you need to know programming then learn it from free SaaS based resources. Man is born entrepreneur( "The Startup of You", Reid Hoffman beautifully described it), in ancient times there was no employee-employer system developed so individuals have to be resourceful to survive. I suggest you to "Just do it!" and build something in which you have passion and create value. Don't worry to much about capturing value( getting rich). If your passion is true then whole universe conspires to help you-Paulo Coelo( The Alchimist)