I believe the answer is that 'only a person's good deeds remain with him or her in the afterlife'. It is important to be a good person and do good, and everything else is fleeting, it will disappear. But you will be awarded for your good deeds.
The best revenge is to just happily move on and let Karma do the rest.
Incomplete, part, abridged, unfinished, condenced, partial, and shortened hope i helped.