Patience

It hard to handle negative emotions in any situation, anger and irritation altogether give a bombing effect. It's easier to burst out arguing till tears come from one's eyes. It's only emotions. It's better damp your ardour and cool down. With the refreshed mind look at the situation one more time and you'll see there is a way out without insulting and hurting. It's much easier to spoil and break something than build and cherish.