It is normal to feel agitated or angry at times. There are many valid reasons to be angry and you deserve to let out some steam once and a while. But to let that anger linger is not a good thing. To avoid stress,you have to calm down and focus on the solution, not on the problem. Take time to cool down & give breathing space to issue of controversy. Stay away from the cause of your anger and give yourself time to think. See both sides of the story and be fair. If you find that you are at fault too, be bold enough to make things right. Apologize and do something to correct the mistake. On the other hand, you find that the other person is at fault, think well and choose your words. Talk to the person and fix the problem together.