BEING WRONG IS NOT A BAD THING
Admitting being wrong brings the action of accepting the response and going on with your day. Not admitting and accepting may lead to resentment. If you actually accept the answer it will not cause resentment, but if you just say ok and hang onto the stress it will cause resentment. Getting strongly irritated and not doing anything to become okay with the response can eat at you forever. There is the part where a person may want revenge or choose to be angry about what happened forever. It is like taking poison to hurt the other party. This is an example of how telling the truth without anger can be positive and healing instead of hurtful. Being wrong does not say anything bad about the person, just that they have made a mistake. Everyone makes mistakes.