I agree that timing is everything, and that we should be open to new things and ideas as we age. I'll have to check out the book myself.
I also like your two basic points: pay attention to what enhances your peace and well-being, and eliminate anything that detracts from it. These are simple but powerful principles that can help us live more fulfilling lives.
It's a really useful book, if the timing is right. I've been studying this stuff for decades but I learned a few great nuggets of wisdom that I had never read elsewhere.
Thank you! Those two basic premises will get you far. I'm trying to be diligent about practicing them in my own life.