I think this really depends on the person. There's someone who is always in full control of emotions and someone else who doesn't seem to be able to control them at all. It's not a general rule and anger is part of this too. There are people who go to therapists to control anger in order to not hurt (mentally and physically) other people. To me being able to control yourself means you are a strong person, but it's only my point of view. As I said, it's not a general rule