It's slightly redundant, but saying the second half of that phrase is helpful:

Everything in moderation, including moderation

There are going to be coding projects where you'll want to document every line and use parentheses liberally, and there will be the counter-projects where everything is fast and loose and you want it to get done more than you care about maintenance*. Whether these are professional or personal projects doesn't matter, it's just important to note that sometimes you shouldn't moderate your own behavior because you think that one way is the right way to do things. Remember that this is Perl we're talking about, which is all about TIMTOWTDI.

The apprentice moderates all his actions, while the master knows when to not moderate his actions as well...

HTH,
jynx

^*This is of course in addition to the standard projects which should be documented "in moderation" (well, but not too well ;)