Don't stumble over something behind you.
Seneca the Younger
Let your critics make you humble, and your enemies make you wise. Learn from every stumble but let nothing keep you down, for you were born to rise!
If you stumble, rise up, go on.
Boyd K. Packer
Fiction, with its preference for what is small and might elsewhere seem irrelevant; its facility for smuggling us into another skin and allowing us to live a new life there; its painstaking devotion to what without it might go unnoticed and unseen; its respect for contingency, and the unlikely and odd; its willingness to expose itself to moments of low, almost animal being and make them nobly illuminating, can deliver truths we might not otherwise stumble on.
True success is one of the greatest needs. Success is not something you stumble onto or come to by accident. It is something you must sincerely prepare for. Take a good look at successes, and you'll see he same consistent qualities all the time - qualities of one's character that make one strive for a goal with a standard of unmatched excellence.
Eventually, if it's on your mind, you stumble on it. You need a certain amount of luck and persistence.