You might be able to calm down according to this quotes when you are angry.

Anger be tough. It can spawn its ugly minions, like frustration, fear, anxiety, stress and even rage. It can feel like its eating you up inside as it practically ruins your entire day while filling your head with a bunch of angry, negative thoughts. Let's cool it a little shall we?

10."If you get angry easily, it may be because the seed of anger in you has been watered frequently over many years, and unfortunately you have allowed it or even encouraged it to be watered."-–Thich Nhat Hanh

Indeed, you're responsible for your anger. Effectively, to constantly water it would mean you've created the habit of anger. You're probably even addicted to it. To stop being so angry, you've to break out of anger. Stop watering the angry seed within, live your life and start planting other seeds!

9."Speak when you are angry – and you'll make the best speech you'll ever regret." --Laurence J. Peter

You'll never mean the things you say when you're angry. So try to be calm. You don't want to end up saying things that'd only serve to produce guilt and regret.

8."Where there is anger, there is always pain underneath." --Eckhart Tolle

Anger is not a primary emotion. It's secondary. You've find the root cause of your anger. What is it? Fear? Rejection? Sadness? Guilt? It's going to be terrifying, but you've to be honest with yourself and start asking the bigger questions in order to overcome anger.

7."Holding on to anger is like grasping a hot coal with the intent of throwing it at someone else; you are the one who gets burned." --Buddha

That's how it feels like when you keep thinking about revenge or getting back at your wrongdoer or bully. This is why you've to let it go. All the angry thoughts in the world isn't going to help change your situation. The best thing you can do is lead your own life and be happy. That's how you surprise your enemies.

6."For every minute you are angry you lose sixty seconds of happiness." -–Ralph Waldo Emerson

It's only logical. Getting angry is not allowing other positive emotions to come in and that is time and space you'll never get back. And life is way too short to be pissed off all the time. You're going to die eventually, so be smart about it!