So, according to that, "work yourself to death in this life, and hope for glad satisfaction in the hereafter?"
Aww, we all have to make our priorities. Life is all made up of choices, and they change as you progress through life. Some choices we make are good and some reveal themselves to be bad. Some people end up making only bad choices and never find happiness.
We can only hope that our good choices outweigh our bad ones. We hear every day from our "news" sources about people who made bad choices and ruined the remainders of their lives through crime, violence, drugs, or imagined ways to "get rich quick." There's no shortcut through hard work.
I beat myself up physically and mentally for forty+ years, honestly earning retirement; I choose now to try to enjoy the time I have left, trying to conserve what I have. I found a terrific woman to make my life with, after a couple of false starts, and have off-spring to be proud of with no "bad apples" among them. I give thanks every day from the time I wake up.