Hello again! :O
In personalitypage.com's portrait of an ISFJ: "If they are negative feelings, they may build up inside the ISFJ until they turn into firm judgments against individuals which are difficult to unseed, once set."
I don't know how it is for other FJ types, but I've found that this is very true for me, and I'm thinking it's probably more true for FJ types than other types.
Does anyone else struggle with holding deep-seeded grudges againt specific people? How do you deal with it?