Big Big Mistake

I seem to cause trouble or make mistakes all the time these days. I really dislike myself for it. First, is that my parents only allows me to use my laptop in a room other than my own, so i wouldnt lock myself up and go on social networking sites. However, because in highschool, there are 1 or 2 classes that requires laptops. So, i gradually started to settle my laptop in my room. I know I am not listening  to my parents like i should be, but hey, i'm a teenager. So, because of that, i started sleeping at 2 or 3 oclock. I have to keep reminding myself of my golden rules and tips for survival. Some people act without thinking. They act without putting themselves in other peoples' shoes, and doesnt care whether they feel uncomfortable somehow. Today, i made a very big mistake. We, our class, had a meeting. Some said it would end in half an hour, some said an hour. Many people were taking time, thinking carefully about our topic for a show, but i was just desperate. I had promised someone to get something for them. I learned long ago, that promises are not to be broken. So, i left the class meeting early. I made an appointment with a taxi driver i know, and i told her to come at 4:45 yesterday. So i left the class meeting at 4. I should have put myself in other classmates' shoes. It seemed like i didnt participate alot. I left very bad today. I promise myself and mark a star beside a new tip for survival : "Tolerance, and Putting Yourself in others' shoes."