The Boy Scout Rule: "Always leave the campground cleaner than you found it."<p>I've always tried to do this in every environment I've worked in, from programming, documentation and planning down to the details of the coffee/snack bar.
A fascinating article about some of the adventures of the man, Frederick Russell Burnham, who inspired the creation of the Boy Scouts:<p><pre><code> https://magazine.atavist.com/american-hippopotamus
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(The article isn't about the Boy Scouts, nor only about Burnham. Burnham's relation to the Boy Scouts is a factoid mentioned near the end of the article.)
There's a lot you can learn from scouts!<p><a href="http://www.usscouts.org/advance/boyscout/bsoathlaw.asp" rel="nofollow">http://www.usscouts.org/advance/boyscout/bsoathlaw.asp</a>