Part 1
Giving your mind over to any thought that wants you to revisit something painful in your past is like taking your dog for a walk and, before you make it back home, finding yourself on the leash.
Part 2
Believing that re-living something painful from your past will one day liberate you from the suffering that you find there in those same tormenting thoughts is like hoping that a hammer can free you from a pounding headache.