That would also work! Anything repetitive and meditative could be something you could use as a focus on the bad insomnia nights.

(My wife's a lefty, too, and she taught herself crochet from a pamphlet from one of the Big Box Stores that had left-handed pictures/instructions. She also knits, and she knits Continental, which is apparently much better for lefties. Check out http://www.knittinghelp.com for videos and instructions; it might be easier to teach yourself from video! There might be left-handed crochet (which I always type as 'crotchet' the first time) instruction videos on YouTube, too; there's pretty much got to be, as you can find instructional video on anything craft-related on YouTube.)