It's an interesting topic. My whole life I've suffered from underproducing because since my teenage years I've been almost constantly tired. I managed to go through medical school by some miracle, but in the past few years all my energy is wasted on work and I am exhausted when I get home.
I don't have energy for girlfriends and not much left for male friends either anymore (most of them are long gone), and I have much less energy for video games than in the past.
None of the methods in the OP works for me. It's hopeless.