“Albert Einstein is on the train. Despite searching all his pockets and bags, he cannot find his ticket. Meanwhile, the controller approaches and says something like: 'Dr. Einstein, everybody knows you. We also know that Princeton has the money to buy you another train ticket.'
Einstein's response would be: 'My concern is not money. I have to find the ticket; because I forgot where I was going.'
Just like Einstein, you should worry about where you're going, not about the money. If you discover where you are going, the money will come anyway.”
Guy Kawasaki "The Entrepreneur's Handbook"