>>212591587 (OP)You can't. Once the source of conflict has been established to be a difference of opinion, it has also been established that it isn't objective truth that is being negotiated, but personal feelings. Insisting on one's personal feelings being correct is childish and retarded.
Conflicts should only be had over 100% falsifiable statements. Either something is mathematically provable, or mathematically falsifable (or metamathematically provable to be neither provable or falsifiable within the formal system of reference) or it's not worth arguing about.