I Have Major Depressive Disorder

I don't know why, but these days, I am always so tired. I pass out early, I have trouble getting up, I feel exhausted during the day... and sometimes I nap in the afternoon. I know I have a lot of stress in my life, I've suffered a lot of abuse from my last relationship... and I am alone a lot when I am at home (I live by myself). I'm depressed a lot lately, bad things have been happening in my life, and in the world.

I don't know what to do about it, some days it's not so bad, but others...

At least I'm good at hiding it from people around me.