Does an injury affect your performance when youre done healing ?

I rencently tore my ACL in soccer, I tore it January 29th and had surgery March 11th. I'm going to a really good physical therapist that incorporates activities like passing the ball and headers and footwork and running and stuff into therapy so i'm not completely away from soccer and i will be doing things that have to do with soccer instead of spending six months not doing anything. I'm just really worried that when I get back to soccer I won't be as good as I once was. Has anyone had to deal with this injury? How did you cope? What did you do to get your muscle atrophy and your extension and bending of your knee back . ? btw i'm fourteen and going to be a freshy in high school if that matters ? ha . thanks (: