Paul Karl Feyerabend said this quote

“ Somewhere among the commotion I grew rather depressed. The depression stayed with me for over a year; it was like an animal, a well-defined, spatially localizable thing. I would wake up, open my eyes, listen-is it here or isn’t it? No sign of it. Perhaps it’s asleep. Perhaps it will leave me alone today. Carefully, very carefully, I get out of bed. All is quiet. I go to the kitchen, start breakfast. Not a sound. TV-Good Morning America, David what’s-his-name, a guy I can’t stand. I eat and watch the guests. Slowly the food fills my stomach and gives me strength. Now a quick excursion to the bathroom, and out for my morning walk-and here she is, my faithful depression: “Did you think you could leave without me? I had often warned my students not to identify with their work. I told them, “if you want to achieve something, if you want to write a book, paint a picture, be sure that the center of your existence if somewhere else and that it’s solidly grounded; only then will you be able to keep your cool and laugh at the attacks that are bound to come. I myself had followed this advice in the past, but now I was alone, sick with some unknown affliction; my private life was in a mess, and I was without a defense. I often wished I had never written that fucking book. ”