Yeah, most of them are surrounded by a family they don't have a good relationship with (whether its their fault or the family's) and "friends" who are such bad influences they would be considered toxic if they didn't have history with them. Almost all of people in the West's problems could be solved if they had someone to tell them basic obvious shit, and they trusted that person to do it. Insert your own jokes about lacking dads here.

And you hit the nail on the head. Most people's depression comes from them fucking up the most basic of bodily functions and their body panicking, which they then use to make it worse in a cycle of suffering. Sleeping properly alone would probably fix most people's emotional issues, and that includes oversleeping.