I've recently realized this doesn't just apply to tasks and people -- it applies to things, as well. I will want to have something, and then my DIY instinct comes in and I think "oh, I could just make it myself!" and boom, I'm in some new hobby, annoying my partner with the smells coming out of the kitchen. I'm slowly learning to catch myself and say "yes, I *could* do this myself...but if I just buy one --" (delegating the making to someone else) "--then I'll have time for this other thing that I know is more important (or want more)."
Great article, btw.