I like “You miss all of the shots you don’t take.” I think Wayne Gretzky said it, but people sometimes also credit Michael Jordan.

Another fun version is “You can’t win if you don’t play.” My friend said this in the course of slowly losing like $4,000 at a blackjack table. The context and outcome serve as sort of a counter argument to the statement.

Edit: He did manage to sleep with the blackjack dealer (who was fairly attractive), so perhaps he still won.