Whenever I have a misunderstanding with another, whoever it may be and however much pride I have inside, there is always a feeling of hurt and guilt. I know, had I been a better person, I could have prevented an unnecessary dispute. I eventually learn to value people more, and realize that human nature is too complicated for even the most advanced human mind, so there is no reason for me to be proud. If someone picks a fight with you, turn around and walk away. Friends and family will always mean the world to you, those two, whatever the costs, the utmost effort will be made on our part to protect them, even if it means sacrificing that which is most precious to us.
Failures are the pillars of success.
Never ever be disheartened when things go wrong, because it's never the end. The show must always go on. Learn from your mistakes, those lessons you can never forget. Never question your abilities. Everyone is special in their own ways.