_ and when it is, I lie there for a while, wanting to roll over and sleep for a couple of hours, and fighting, trying to find the will to get up. I think of TS Eliot's The Hollow Men, one particular stanza, and it works so well I copied it and put it on my bulletin board to memorise it. Here it is. Maybe you can use it, too:
Between the desire
And the spasm
Between the potency
And the existence
Between the essence
And the descent
Falls the Shadow
I guess it's the spasm that works for me.