The first problem you need to solve is determining which problem consumers face and how you can build a viable business model around solving that problem. This is where the fun begins and you?ll want to strangle your business partner from time to time. And I say,?You failed.? Entrepreneurship is a full-time commitment full of sacrifice and sometimes even despair, but at the end of the day the fulfillment that you?ll feel from seeing it through is worth a thousand bankruptcies and a thousand sleepless nights wondering how you can gain more customers, more revenue, more clout, more breadth.