Heightened senses, emotions, and a heightened self-awareness is actually a sign of higher intelligence. It's not a matter of maturity. You are simply more aware of your surroundings. The easiest way for me to cope with this was to contain my emotional response by observing and imitating others, in order to blend in with my surroundings. It causes a bit of anxiety at times, especially a racing heartbeat, but it's useful.

I like to refer to Vulcans from Star Trek for methods on how to suppress my emotional response. Best way is to find a useful balance between logic and your emotions.

Basically, Spock it. There's nothing wrong with you.