3 Things...

Remember it's people who make things happen...or not happen, so, if something has not happened, there are only three things/reasons that it did not:

Someone did not know,
Someone did not know how, or
Someone did not want to do it.

And, to remedy these situations/occurrences, you will want to address them very differently. The solutions are here, so if:

Someone did not know, provide information, and if
Someone did not know how, provide training, and if
Someone did not want to, provide an attitude check.

Attempting to analyze and interpret things outside these three reasons will be futile and frustrating...the challenge is to offer the right solution based on the situation, and not just continue to provide one of the three regardless of the occurrence.

So, from your children doing their chores to your team completing projects, ask yourself (and them, too) what one of the three things to address, and then provide the feedback to enable and encourage their success!