I think I overcompensate, but not in the typical ways. please help.?

Outside of the home, I tend to get pushed around a lot. People usually can talk about me in front of me in just about every way, and I'll take it. I have a hard time defending myself at school, BUT at home, I am extremely loud with my family...pushy...and simply overbearing(and that's putting lightly). I just had this epiphany about a one second ago. I want to stop badly!!! I just have no idea how. My family is number one in my life...I love them with all of my heart, and I try my best to be nice. Sometimes I feel that if I don't put on a "tough guy" attitude at home that I may get walked over in home, too. I know I'm screwed up. May you please give me some advice!!! What's wrong with me?