Let the Frustration Out

I have a tendancy to let my anger and frustration build up over time. It is like I am afraid to let it out, and I fear that once I start, I will not be able to stop. It is like I think that if I uncork my bottle full of emotion, I will not ever be able to put the cork back on if I needed too.
So, I do not tell people how I feel, other then my therapist, and I let my anger build. This leads to a huge explosion. It starts with a rough morning, of forgetting to bring something to school, or missing the bus. Then, I have a terrible day at school, getting laughed at by my classmates. I take the bus home, getting more crap from classmates, and then I run into my parents. My father is inevitably in a terrible mood and yells at me, causing me to go off, not on him, but on my mom. I take a lot out on her. I do not do it on purpose, but it is like, I yell at her because I know that she will still love me, even after I through a fit or flip my lid.
This pattern of holding it in and then blowing up is not working for me, my family, friends, or my mental health. I have never really looked for a release for stress or anger before, and I fill a bit silly doing things to let out anger. Punching a pillow does not work for me, but I yelled into a pillow for 2 minutes the other day, and felt surprisingly better. But, I can not just go around, soaking pillows with spit as I yell into them.
Stressballs are fun, but a chunk of sculpy clay is more effective in letting me let out my anger. And Animal Crackers. Biting someone's head off, after naming it, is nice, but I do not want to be relying on food for anything, even if it is not a daily thing.
I have not really tried anything else to relieve stress, I do not know much of how, so any suggestions would be greatly appreciated. Like, something to do instaed of yelling into pillows, scribbling and smashing balls of clay, making loud grunting noises. I am all ears.

The Girl Uninspired.

Anger Is Definatly Not Helpful

I get discouraged really easily, and I did this well before I showed any symptoms of depression. But now that I am depressed, my quick temper seems to make everything much worse. It is though I have lost any control of my emotions, and no longer can keep them in check. Not only does this make me feel terrible, but it has started to put a toll on all of my relationships with people.
I have four best friends who I go to school with, and I have two others who I call my long-distance best friends. I have more then four friends in school, but I am quickly losing them. I used to be able to hold my tongue and all of my sarcastic comments. But now, it is though, the second they start to complain or whine, I jump on them. I have become so much more irritable, and I do not know how to change. I am afraid that, if I can not change, and control my temper better, I may end high school with no friends.
What is even worse then how I over-react and get mad at my friends, is how I over-react and get very angry at my mother and father. I have yelled at my mother, causing her to get angry at me, and not talk to me. But, my biggest problem is when I clash with my father. We have a difference in opinion, and we go off. I have stoped trying to yell at him, or get him to see what I am trying to say. But after he yells at me, I am full of resentment, and I hold on to my anger. This clouds my judgment for the rest of the day, or week, and I do things to purposfully annoy him.
Yes, I hold a grudge. I do not know how to let things go. I can not be the only one who does this, can I? Do any of you have similar problems? Is anyone else really angry, all the time?

The Girl Uninspired