My last girlfriend was very much the kind of woman you describe yourself as having been. As much as I loved (and still love) her, I can’t wrap my head around the constant striving. It’s never been a part of my makeup. It made me uncomfortable and anxious and I couldn’t figure out a way to coexist with her. I always felt like I wasn’t enough for her (my words, not hers).
I’ve never been one to acquire stuff (and yet I still believe I have too much). I’ve flirted around the edges of this culture because I grew up in it. But it was never really who I am. Minimalism spoke to me from the moment I first heard of it. I think you speak very well to the illness that is current world culture (at least in the “western” world). The planet won’t survive much more of this.
I’m afraid I don’t see a mass movement away from this way of life though. Our entire world economy is completely dependent upon it. Greed is good now. As long as that, and envy, are considered positive traits we’re hosed.