Let me be honest

Okay, I'm going to have to be honest...
Writing lately has been painful - too much a chore... It just hasn't been as enjoyable as it used to be.

So I can't help trying to think back to the times when writing was effortless... There must be a significant element I am currently missing. What exactly did I write about back then? Why was I motivated to write? Why did I feel a burning desire to write? What is the problem now?

(Sigh) Perhaps I'll try sleep on it...