Expanding Definitions of Productivity & Accomplishment

I am drawn to (driven to?) productivity, as many of us are. It comes through our culture, this emphasis on doing, doing, doing. It feels good then, to be productive and to accomplish a lot in a day. It feels gratifying, as if all of this doing means something. If I dig way down deep, achieving seems to mean that I am enough-- good enough, hardworking enough. At the same time, this can feel like a kind of tyranny-- that I MUST accomplish a lot, and if not, it could mean that I failed in some way. But what if I’m tired? What if I’m not feeling well?