Feeling like my head is under water...

For some reason, recently, I've been feeling super depressed. I don't know what's wrong or why I'm depressed, but it sucks. I just wanna sleep all day and night... I've stopped eating as much as usual... and my coping methods don't work anymore. Could anyone tell me some of yours? I don't like taking pills, so refrain from those please. Thank you and no negative comments please.