[untog]

Quite. The startup world can be very dangerous that way- when your definition of success is "being Mark Zuckerberg" then being anything less than a millionaire is "mediocre".

Your startup is statistically all but guaranteed to fail. Your life will be "mediocre" yet it will continue to be the kind of life that millions of people aspire to and are unable to reach. When looked at objectively, your life will be "pretty damn nice", no matter how much inner turmoil you feel about it.