No business can stay in business without customers. How you treat - or mistreat - them determines how long your doors stay open.
For the real winners, there are no finish lines.
A string of successes can kill you if they make you think, 'Hey, I'm smart; I can't make any mistakes'.
Make the second effort your second nature.
If you get a chance, take it. If it changes your life, let it.
If you want to double your success ratio, you have to double your failure ratio.