What is the key

I’m really struggling at the moment.

I don’t know how to think, how to feel or how to be.

It has been a very long time coming and I don’t know what I really expected.

My determination is probably the only thing that is going to get me through this.

Even though I feel battered every which way from Saturday.

My sleep patterns are up the wall, I don’t care. I’m irritable, irrational.

My problem solving competences are terrible. I have a constant headache, often stomach aches and dizzy.

I look like shit

How do you get through it? What is the key?