Unlike some of the esoteric things [and I've tried 'em] - just looking up from what you're doing, noticing the chair you are sitting in, the motors running around you, the sound of the lights (if they make noise) - just plain ol' awareness of "now" is enough to reset whatever needs reset. Just takes a couple of seconds. I don't like staying in that "present" moment for *too* long because it's addictive, but I carry a bit of that present into every 6-second phonological loop that I can, a subtext, undercurrent reminder that, "Yes, I'm REALLY here", even if I have to mentally call up a map of the globe, find myself on it with a big sign that says, "YES, KEN, YOU _ARE_ HERE".