You set your goals to a point where they're attainable, but far enough away that you have to really go get them. And every year I push my goals a little bit farther away, and every year I work a little bit harder to get them. ↗
That is, a system starts with a group of interrelated propositions which involve reference to empirical observations within the logical framework of the propositions in question. ↗
I think I became more productive through not having children. I never really had the desire to have them. My husband didn't want them either, so it worked out well. ↗