Depression Part 2 by Hyperbole and a Half is the most important thing you’ll read all day.
I know everyone and their mother has probably reposted this link already but, please please please read this. It’s really the most accurate and straightforward description of depression I’ve ever read
Especially the part with the dead fish
A lot of people who don’t really understand depression reduce it to simply just “being sad a lot”, when it’s actually much more than that. If I could try and boil it a single phrase it’d be more like “long periods of intense apathy punctuated by feelings of helplessness”. It’s not about just feeling sad, it’s more or less about not… really feeling anything. All while still trying to deal with going about day-to-day life and holding tight to whatever sort of distractions you can manage to care about enough to find, just to keep yourself from thinking about it too much.