Don't go overboard though. The whole world doesn't play out with a hindsight bias, and just asking yourself in the morning "why is this important" wont necessa

Don't go overboard though. The whole world doesn't play out with a hindsight bias, and just asking yourself in the morning "why is this important" wont necessarily actually improve your choices. I have seen some incredible successes coming from very unexpected places, places where had somebody asked themselves "is this likely a giant waste of time" the answer would have been yes. At the end of the day, if your startup is going to succeed then you are going to have to do something amazing. If you are spending all your time stifling your own instincts to follow somebody else's playbook, you probably are in trouble anyways.