The seabbard is content to be dull when it protects the keenness of the word.
The only thing standing between you and your goal is the story you keep telling yourself as to why you can't achieve it.
On pivoting: "If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve."