As i have time on my hands atm, I've been reading stuff about mindfulness. I'll save you the bother if you don't want to plough through the stuff, or pay exorbitant amounts for academic sounding titles as it all boils down to "don't sweat the small stuff" and "live in the moment". Not always easy to do, I too can pick up some little thing and worry away at it...my inner voice, which sounds uncannily like John Motson, commentates on the issue until I manage to drown it out...I hate worrying about trivial stuff, and my rather bleak thought is that a good way to stop it is when big stuff comes along to worry about.