I often feel that way about reading - just can't find a book that draws me in. So, I just put on some comfortable music, push back in my chair and drowse a bit. Not music that demands attention though. Something for solo piano, like, perhaps Brahms, Debussy, Schumann, etc.
You might try reading something, like a newspaper, i.e. the NY Times. That ought to put you to sleep. :-) When you wake you can focus on your music which demands your attention.