Dust yourself off and try again
As a child you didn't attempt to walk once, then think, hmmm I'm not sure that's for me, and give up. We'd do well to remember the persistence these acts took and apply it now.
Trying harder isn't always the answer
We can often be guilty of stubbornly repeating the same thing again and again or trying harder and harder to get what we want, as if brute strength and determination will do it.