I usually concentrate on one particularly difficult thing...like I will lie down and try to only think in French. Or I will do a really complicated math problem in my head, or count by 7's as far as I can go. Something that takes a ton of concentration and it sometimes works. Either that or I repeat a certain song or phrase over and over again (I realize this is ocd, but its better than zooming from one thought to another for me sometimes.)

Hope you feel better soon.