I used to feel guilty about spending morning hours working on a book; about fleeing to the brook in the afternoon. It took several summers of being totally frazzled by September to make me realize that this was a false guilt. I'm much more use to family and friends when I'm not physically and spiritually depleted than when I spend my energies as though they were unlimited. They are not. The time at the typewriter and the time at the brook refresh me and put me into a more workable perspective.
I would say the thing you can still see in Black Mirror is that I was probably traumatized by the specter of nuclear war. I was born in 1971, and in the '80s I came to understand that I was inevitably going to be frazzled to death in the nuclear apocalypse.
I'm my happiest when I'm really busy. I love feeling like I need one more hour of sleep, or when I'm running around frazzled!
Most everyone I know feels frazzled and overwhelmed most of the time.