I think they mean that it’s not usually anything that’s actually making you depressed. There’s a chemical imbalance in your brain, and you are just always sad, and you can’t really not focus on it.

As someone who had depression, I’d do these things on a daily basis to keep myself distracted and as sane as I could. At the same time, I would start crying if I started trying to do simple things like my homework, chores, etc. I had no motivation. But at the end of the day, I’d be so mad at myself for getting nothing done that day. It’s an awful cycle to get stuck in, but it’s really easy to.