I try to apply it all the time, but apparently it is a
dying kind of
dispute resolution.
It isn't a form of dispute resolution at all. You can't really forgive
someone until they accept they did something wrong (well, I guess
technically you can, but it doesn't achieve much), and once they've
done that, the dispute is already resolved. All "forgive and forget"
says is "once the dispute is resolved, move on, don't try and punish
people for their mistakes".