At some point in the past, quite likely in the wake of what could be called a domestic social war, I feel like I made a major step in the direction you describe: several layers of the onion. I rather abruptly lost a lot of my inner turbulence, attaining a sort of peace that I hadn't known before.

But:

- is it less turbulence because there is less flow, or has it become more laminar?

- am I harder to upset because I just stopped caring?

I do feel like I've made a lot of progress, though I can't identify how. There are small things that I still get passionate about (e.g. the Right Way to do certain things at work), and I'm still passionate about most of the big things. Perhaps I've just become oblivious to most of the little things.

Good luck with your introspection. Hopefully you'll do better at guiding your development than I've been at riding along with mine.
:-)