Good to see you back, Cleopatra.
Stumbling is only a bad thing if you don't pick yourself back up. Nobody dances their way to the top of Everest. Even if it's two steps forward, one step back, it still adds up to forward progress.
I have some friends who are research engineers, people who are working on technology that's pushing the frontiers of science. They look at failure as proof of effort. You can't fail if you don't try. And if you don't fail at first, well, whatever you're attempting must not be very difficult. On the wall of their lab, I saw a quote about failure from the inventor Thomas Edison. I looked it up online later, and it turned out Edison had a lot to say on the subject:
"I have not failed. I've just found 10,000 ways that won't work."
"I am not discouraged, because every wrong attempt discarded is another step forward."
"Nearly every man who develops an idea works at it up to the point where it looks impossible, and then gets discouraged. That's not the place to become discouraged."
"Many of life's failures are men who did not realize how close they were to success when they gave up."