Persistent people begin their success where others end in failure.
'Cheshire Puss, would you tell me, please, which way I ought to go from here?' 'That depends a good deal on where you want to get to,' said the Cat. 'I don't much care where--' said Alice. 'Then it doesn't matter which way you go,' said the Cat. '--so long as I get somewhere,' Allice added as an explanation. 'Oh, you're sure to do that,' said the Cat, 'if you only walk long enough.'
uit Lewis Carroll's "Alice in Wonderland"