I sometimes suffer from Hamster Brain, where I can't concentrate on what I need to do (like work) because I'm either excited about some new thing that I *really* want to think about (Happy Hamster), or something's bothering me, and I can't stop obsessing about it (OCD Hamster).
Well about 4 months ago, I found this recording by Jonathan Goldman that's designed to facilitate meditation. I'm sure that there's some 'mumbo-jumbo' that's involved with how it works, but in this case, it's beside the point for me, it just works - with zero effort on my part. I've recently found that it also allows me to get my brain into a quiet 'meditative' state very quickly.
You can also listen to the whole track on Rhapsody for free, but it's only .99 to download it, if you find it helps. Rhapsody - Ultimate Om