The goal ain’t work for work sake. The goal is to only work on things you truly care for (what you got your heart in). The goal is purposeful productivity:
To lay forth
Thus when it comes to your ‘purpose’ in life, it means:
I declare this worthy of myself, and I will put all my metabolic energy and force into it.
Thus simply put:
Purposeful productivity is *NOT* doing things you don’t consider worthy of yourself.