A big problem. Help me out!

I kept dozing off and feeling exhausted all day. Even though I attempted to concentrate myself to do some while reading and watch certain some wonderful movies, it did not work. I figured out all of this was caused by bad sleep last night. I've been was too stressed these days lately and had no opportunity to have a good night's sleep rest, it circulate badly (what circulated badly, the stress, your blood?). So it seems I get have a big problem and I have no idea how to get through of this.