Failure definition

I’m part of the Coach Certification Programme and I can read in the Curriculum Book Glossary that “failure is the omission of expected or required action.”
I’d always thought that failure was a result, for the Impossible Goal for instance. We do take action, don’t we?
I like the glossary definition, though, because it means as long as I take massive action, I can’t fail. Everything is under my control.
Do I get this right?
Thank you!