Without the ability to visualize a goal and believe it will be reached, nothing of substance will be achieved. Not by anybody. Not at any time. Not in any place.
It is human nature, especially as we get older, to look for stability in our lives. But if you want to be a successful entrepreneur, you have to fight against that somewhat, as starting a business requires movement. You cannot stay still.
I don't look at failure as death, I don't look at failure as finality. I just look at it and pick myself up and say 'we shouldn't have done that' and move on.