The bible tells us to transform our personality so that we become better people and pleasant. So, as JW, we were all supposed to do that.
It's funny, but most JW's I know, also transformed their personality into something more hateful.
Maybe they stopped doing bad things that were apparent, but they also started doing hateful things that they didn't do before such as shun people or ignore their own brothers and sisters who don't see exactly eye to eye with the Org. As well as divide families, which they didn't do before becoming JW's.
I rather their old personality, before they became JW's.