| If you're failing, you're doing something right.
Wrong. This only goes on to emphasize the stigma associated with failures. This sentence is a cover up for the fact that someone did something wrong, or at the very least, things did not go as planned. Failures are bad and heartbreaking, and we should accept it in its entirety.
| Don't fret the failures.
Right. Instead of focusing on getting stressed and fretting, the right thing to do is fix whatever it was that resulted in failure. And when you redo it and its a success, that means you did something right.
A failure means you took risk, which is something you should do if you want to push the boundaries. So you did do something right. No one would suggest you did everything right.
Conversely, absence of failure may mean you took a calculated amount of risk and it paid off. But it could also mean you were overly conservative, didn't push the boundaries, and took a minimum of risk. There's no way to tell the difference purely from the absence of failure.
The worst outcome is when a failure happens and you though you were very conservative but actually had no idea what the real risks were. That's the Challenger situation.
Taking risks is good in testing/design, but not a great idea for a production rocket. You want to find all the failure points during the design phase instead of blowing up expensive payloads.
| Don't fret the failures. Right. Instead of focusing on getting stressed and fretting, the right thing to do is fix whatever it was that resulted in failure. And when you redo it and its a success, that means you did something right.