It's important that we learn how to think more than what to think. A question should ask yourself is "What is possible?" because that allows you to expand your mind and have other ideas that you maybe never had before. 

I want to tell you a story from a book that I read, Think and Grow Rich, by Napoleon Hill. In the book where he talks about the mind and thinking, Hill tells the story of two individuals who got together at the turn of the 19th century. One was a drugstore clerk and the other was a doctor.