Don't dwell on what went wrong. Instead, focus on what to do next.
Spend your energies on moving forward towards finding the answer.
(Dennis Waitley, American motivational writer)
Reflect upon your present blessings, of which every man has many; not on your past misfortunes, of which all men have some.
(Charles Dickens, English novelist, 1812-1870)
The golden opportunity you are seeking is not in your environment, not in luck or chance,
not in the help of others. It is in yourself alone.
(Orison Swett Marden, American author and editor, 1850-1924)
The bamboo which bends is stronger than the oak which resists.
A man should never be ashamed to own that he has been in the wrong,
which is but saying that he is wiser today than he was yesterday.
(Alexander Pope, English poet, 1688-1744)