Hm, well after reading the wikipedia article (link in my parent post) actually I am not sure as to whether it's been demonstrated scientifically that it is alwa

Hm, well after reading the wikipedia article (link in my parent post) actually I am not sure as to whether it's been demonstrated scientifically that it is always there, so perhaps then one should go into it with no expectations whatsoever :) - but don't get me wrong on this, I do think it's great advice, and for the majority of people it'll do wonders. Just be careful not to place too many expectations on it.