If your in high school, click here please?

I'm going into 9th grade. When I wa sin 8th grade I was totally shy, but near the end of 8th grade I got fed up of being shy and just completly turned into soemthign I'm not. The exact opposite of shyness. So now, I wnat to be myslef in HS but I don't wnat to be too shy or too...slutty/obnoxious/loud. Any advice any help?