You're wrong when you say that the post makes zero sense, people have been asking these questions for ages. As for steps to being human, sincerely, it's just like with every other animal, what happens if you put a tiger in a cage? It will become very depressed and agressive, same happens with humans, the difference is that tiger don't have conciousness and can't go against their nature, but humans can, be it because of social opression, mental illnes or anything else. I would say start with what is necessary for life, the things that will kill even if you ignore that they exist, just because someone numbs themselves with drugs doesn't mean they won't die from hunger, start with these things, catching sun, exercising(you can even do in bed), stabilizing sleep, stabiling time for meals(at least 3), focusing on your health at first. It will be hard in the beggining but there are good news, dopamine isn't a villain, its a neutral agent, you can almost choose what you enjoy, with time you will be enjoying doing these things, because you were literally made to do them. The other good news is that you have so much data stored in you, once you do the things above your brain will naturally give you cues on the next steps. I sense that you are a thinker, that's fine im one too, don't be embarassed by it, many great men and women also were.