The change & growth of a 15 year old requires mistakes. That's who you become, that's how you learn from your mistakes. For me, I can be quite a narcissistic and stressful person. I cause my parents grief when they don't need it. But with some aspects, they don't understand how I go about things.
Getting back to the selected freedom thing. One of the hardest and most mind boggling things of being this age, are the emotions. Sometimes I cry my eyes out, sobbing to the point where I am gasping for air ` with little things such as a missed plan or things gone awry; amiss. Naturally, I'm a very dramatic person. But I wanted to say one thing. You are not alone. If you are reading this, tears screaming down your face, and you're shaking back and forth, you're okay. Some things are milestones. You have to get over them and feel better. There's nothing else to it. You are having a bad day, not a bad life. Each day is different and brings something new - it's your mindset & therefore a choice of choices.