What do I do?

So I honestly feel like I'm losing my mind. I'm tired. No, you don't understand, I'm really fucking tired. And I made a point not to curse in this blog, but I feel like that real emphasized how I feel. I'm so tired that I can't even think straight anymore. No really. My thoughts move in loops of nothing. I can feel like I'm falling into the deepest pits of despair and the only way out is hidden. I'm trapped and I hate it. I'm just so frustrated. What do I do? Seriously. What do I do? I can't do this anymore.