I'm almost in my thirties, but I'm still acting like a child. I don't know why I am still behaving like this. I should be a mature adult and the one thing I need to do is that I must stop lashing out at people, even if they didn't do anything wrong.

You're right, people. I have anger issues and I need to learn how to control myself better. Maybe I should contact a therapist if I'm in a bad mood, or perhaps I could find something to keep those negative thoughts and feelings out of my mind.