Hi. I've got this problem of weird mood swings. I'm a teenage girl, so other people just write it off as puberty stuff, but it's been happening for years and it's still not stopping. Basically I'll feel okay most of the time (although as a introvert with no people skills I feel almost constantly feel left out), but then someone just has to say one tiny harsh thing about me and I'll suddenly get this massive wave of depression. It can make life really hard. I'll be doing something I should normally enjoy, but everything will seem just so sad and pointless, as well as taking away my energy to work. It makes me hate myself a lot too, as I know I don't have a reason to feel this way, so I often try to place the blame on others. However, this just makes me hate myself even more. But what's worst is how it makes me feel so worthless, that I'm just a whiny girl who thinks her problems are so much bigger than everyone else's and doesn't even have the courage to talk to anyone about how I feel. And then I'll suddenly feel normal again, making me feel like I was making a big fuss over nothing.

I really don't know what this is (it doesn't seem to be typical depression) and I don't have any way to stop it. Can anyone please help or give advice?