There's some background on one of the theories why MDMA may make make negative memories less painful in this Wired piece (if you can get past the link bait titl

There's some background on one of the theories why MDMA may make make negative memories less painful in this Wired piece (if you can get past the link bait title :-) http://www.wired.com/magazine/2012/02/ff_forgettingpill/all/1 http://www.wired.com/magazine/2012/02/ff_forgettingpill/all/... Simplification: the act of recollection involves the memory being erased and then rewritten. If you're "happy" when you rewrite it then some of the negative emotions get knocked off for the next time you recall it.