I need to change my name legally, is this a valid reason?

I hate it when people say that I have other issues and that changing my name won't solve them. I get that. But, I would feel a million times better if I could have a name just for me. I hate, hate HATE being asked "we have fifty Sara Johnsons, which one are you?" every single day. I hate always being confused with someone else. A name represents you and it's humiliating to have to be labeled as another face in the crowd.

I want to change my last name to Infante, my great grandfather's last name. I'm not sure if I'm related to Pedro or not but I don't know of anyone else with that last name. It sounds classy and regal and I LOVE it.

It's more than I just don't like it. It's making me absolutely miserable. I struggled to accept it out of guilt and love for my family but it's just more than I can stand. I don't have anything to identify just me, and I'mk always getting lost in the crowd. I want to have a special name all my own to cherish. Furthermore I'm a musician and Sara Johnson is too plain and a detriment in music, where you need to stand out. Yeah, I know there's Eric Johnson (I"m not related to him) but for the most part a plain common name is a real detriment.

Every time someone says, "we have a lot of Sara Johnsons," I feel so INSULTED. Like I'm just another girl. I want a name that sounds like a star and identifies me as "I'm unique and God made only me." I want a name all my own. I know that SOMEWHERE OUT THERE someone will have the same name as you, but I run into many people with the same name every day. It's so humiliating. I can't live my life like this, I need a decent name. Sara Johnson just isn't much name.