Our Autos, Ourselves

The sticker on my windshield reminding me I'm overdue got me reflecting: Is there an equivalent in human terms for the necessity of regularly changing the oil in our autos?

First thought: How about the way many of us get our teeth cleaned every six months? Threw that out as not quite the same as an oil change - more like getting the car washed, isn't it?

I also discarded my second thought, the idea of getting periodic total blood transfusions, as too radical. But the strong parallels between the two processes, i.e. out with the old, in with the new, makes it a better fit than teeth cleaning. How about fasting? Nope, that's more akin to not driving for a few days.

Because no reasonable physical equivalents come to mind, I'm thinking something behavioral is called for. How about this? At the same time each of us gets our oil changed, we dump past resentments and replace them with positive thoughts. Pretty sure toxic thoughts I've held onto have done as much damage as the dirty oil sitting in my engine right now.