I'm happy you guys liked the video.
Since I have begun practicing Buddhism, and meditation, the reduction in my own depression and anxiety problems have been beyond drastic. I have since begun recommending meditation to many people and friends.
I think she means negative rumination, rather than self-criticism like wisdom mentioned, and I def. understand how meditation helps w/ that particular problem, in training your mind to move back to your focus when it strays, is rather similar to the problem people have in negative-rumination, and can be applied to refocus your mind on positivity, or compassion as it may be.
It really is amazing what meditation does for your mind.. and I really am surprised it hasn't yet become a mainstream staple of healthy living. (like diet, exercise)
That's really cool noah -- It'd be pretty awesome to get formal meditation training. I've been watching quite alot of video's on that subject, if you do a search on youtube for "meditation and neuroscience", you'll find a wealth of awesome-ness.