I keep a list I call the "Icky" List and I have to do 3 or more each week. Stupid things like calling the cable company to fix the TV, things I know will require something of me (like staying home for hours waiting, which I'll do but just not if someone is "making me" do it). I'm 48 and not a 3 year old, but you'd never know it.

So far the Icky List trick has tricked me into performing some tasks that would've never gotten done and in the end, I can see a little bit of my former self in it. Maybe that helps?