Persistent people begin their success where others end in failure.
-- Edward Eggleston

I'm trying as hard as I can, and sometimes things don't go your way, and that's the way things go.
-- Tiger Woods

Be persistent and work hard.

Will this guarantee success?

Of course not. But it certainly will increase your chances!

Success is a marathon, not a sprint. Never give up. Tom Peters believes that "success in business comes from surviving long enough to get lucky."