Alistair and I are currently trying to do a daily meditation training.
We use the ipad application Headspace which has a daily talk through. It starts with your eyes closed and you scan the body from head to toes, seeing how you feel physically and emotionally. Then you do a while where you count your breathing from 1-10, this is very helpful everyday if you feel tense. Then you just let your mind wander.
It is very helpful for relaxation and for noticing if you are doing obsessive thinking about things, so your mind can move on. The idea is that you can be aware of your moods and thoughts so you are not taken over by them. It is not easy, but I am already finding it very helpful.