Sleep Deprivation

I have been having bouts of insomnia lately and crazy dreams.  Why?  A few weeks ago I kept dreaming that I was hooking rugs and last night I was designing yarns in my sleep.  If only these creative moments came while I was awake!!!  Unfortunately I am so tired during the day that any form of creativity quickly fades before I can do anything about it.  Any ideas to help with insomnia or creative blocks???