I had a wonderful "paid professional friend" for a while who commented that my mind was like a Calder mobile, its drifting elements being my various passions and interests. The interest-du-jour was whichever element had drifted to the foreground.

I found this metaphor enormously reassuring, because up to that point I'd just called myself flakey.

In sharing this insight with friends, I've concluded that Calder-Mobile-Mind is a trait I have in common with everyong I find interesting, and it's a source of intermittent despair to all of us.