Any ideas on how to clear your head?

At the moment I am feeling a little bit whey, a little bit woah. Nothing seems to be in balance. I just can't concentrate on anything my head is filled with things I should be doing and all sorts of ideas and just plain daft thoughts. But no ability to simply concentrate on one thing or get anything practical done.

I have not been sleeping well, waking up regularly around 1am if I go to bed early or 3am if I stay up hoping to sleep thru. I wake up usually after an intense dream while I think what is in the dream is real then realise I am awake then it takes around an hour to get back to sleep.

Do we have a doctor in the house?

Any suggestions on cures or reasons?