Does anybody else feel trapped?

Does anybody else feel trapped? I don't know what it is. I feel like a caged animal. I don't feel free. I don't know if it is my severe stutter. Like I'm uptight, always serious and stiff. I can't loosen up. I don't know why I am this way. I can't have fun. I went to a concert the other day and like I saw people dancing and having fun and I could never do that. I can't just relax and be in the moment. It's so frustrating. Why am I like that?