Are you helping people? Are they happy? Are you happy? Are you profitable? Isn't that enough?
Derek SiversGo find very early versions of things: the first TV pilot of a later-successful TV show; early audition tapes by famous actors; early demos by famous musicians. Focus on these early examples, not what they became over the next 20 years. Remember that what you're doing will constantly improve.
Derek SiversThe single most important thing is to make people happy. If you are making people happy, as a side effect, they will be happy to open up their wallets and pay you.
Derek Sivers