This may sound slightly esoteric, but I find that if I just stop, and contemplate what is going on, within and without, I gain perspective. I'm not religeous per se, but this is a spiritual practice from Zen Buddhism called Zazen, that helps me get off autopilot so I can see clearly again. Just watching yourself, not negating the emotion, not judging nor even changing anything, is I find enough to give me perspective... particularly useful in business when the pressures get too much sometimes and you can't see the right course of action.