The tragedy of life doesn't lie in not reaching your goal. The tragedy lies in having no goal to reach. It isn't a calamity to die with dreams unfilled, but it is a calamity not to dream. It is not disgrace to reach the stars, but it is a disgrace to have no stars to reach for. Not failure, but low aim, is a sin.
It must be borne in mind that the tragedy of life does not lie in not reaching your goal. The tragedy of life lies in having no goal to reach.