No one is perfect but do your best to always stay humble. If you're wrong - admit it. If you're remorseful - say sorry. There is no manual to life and every one is going to make mistakes because no one is perfect and we're all in this game of life together. Allowing yourself to be sorry or admit fault, allows others to see that you're a human being and that you geniunely care about their feelings because you have the ability to humble yourself free from negativity. Furthermore some people, when they know they're right, need to hear that they're right and it can be a necessary factor in their day.