Hindsight vision is always 20-20, but seeing what lies in the future is totally something else.  The future is unknown, risky, and indefinite.  It's no wonder we hesitate to take the bold step whether it is launching a business or moving away from the security of the nest.  No business or marriage would likely fail if we knew the future, but neither does any endeavor succeed apart from a measure of risk.  The armchair critics risk nothing.  They are the ones who quarterback from the sidelines.  They are exactly right with their criticism, but they are worthless when it comes to playing the game.