Most media is depressing and jewish and even when it isn't it fails to interest, socialization is stressful and intimidating, work is monotonous and unfulfilling, I can't get a woman despite my standards basically only relating to her race and fertility, and I don't see anything else to do. You could tell me to get away from the internet for a while but then I'm left with nothing but food.
"He who increaseth knowledge, increaseth sorrow." -Ecclesiastes 1:18, KJV
I've found this to be true as well, and while there are times I wish I was dumber (dumb people ARE a lot happier, and actual mongoloids seem to be the happiest people on Earth) the reality is that the search for Truth & expanding my knowledge is one of the many great quests I am on in this life, and it simply is not in my nature to stop such a thing. Even when it's damaging to my wellbeing.
That Goebbels quote has stayed with me a long time and helped in periods of darkness. In the past, before finding Christ Jesus again, I had multiple periods of severe depression (including contemplating suicide)...often lasting years. I remained active and did all the things that I needed to do to keep trudging forward, but the world was all grey & dreary meaninglessness to me. It did indeed take a lot just to get out of bed in the morning and going through the motions doesn't even begin to describe the feeling. But as you said, being sedentary makes it even worse. It's important to remember that however bad one may feel.... it can always get worse. That's not the kind of thing a depressed person wants to hear, but then someone locked in the vise of depression doesn't really want to hear anything: so might as well be straightforward about it. Definitely stay away from the mind poisoning SSRIs & other brain fucking "medication" the kike pharmaceutical companies peddle and profit from. Finding some sort of purpose or reason to keep moving forward is critical.
Returning to Christ gave me purpose again, but I can't say that has made life easier. Just improved my ability to mitigate & shoulder it , because Jesus is helping me carry the weight. This year in particular has been a very bad one for me and my family, filled with loss. Without the Lord by my side I seriously doubt I would still be here today.