Losing Self-Control

One day in 7th grade, I made a decision that has haunted me ever since. My two friends that don't get along too well were arguing. I asked them to either do it elsewhere or not at all. They continued without taking my suggestion into thought. One of my friends insulted the other with harsh words that deeply enraged me. I began to yell at him, a whole lot. Afterwards, I felt better, but as soon as I remembered what I said, I felt ashamed. What had taken over me? Yes, I did something about his insult, but I should have solved the problem in a calmer, smarter way. Althought I apologized to my friend, I still feel horrible inside. From then on, I promised myself that if a situation like that ever occured again, I would control myself and handle the situation like an actual human being would.