What Would You Do if You Knew You Could Not Fail?

I like to ask people this question. What would you attempt to do if you knew you could not fail? And the way that I interpret that is very much when I use a lot for work, which is don't imagine what will make this project successful. The piece of advice that I got from day one of being in a community was and an old woman said it to me: give back more than you take. So I prefer the worst bit of advice, but what's the best bit of advice or worst piece of advice you've ever received in your life?