can someone help me solve this problem?

im mad at my "best friend". there are quotes around this because i don't like her... at all anymore. i guess im jealous that it seems like she gets more attention from my bestest friends than me. i feel like everyone likes her more than me and i hate that feeling. i want to be that girl who everyone loves to be around, but i don't seem to be that person. i feel like im putting myself down and not being that person by worrying about her and what she does. i used to be such a laid back, lovable person, and now i feel like i can't manage myself and my feelings to feel happy because of her. i also get really mad when she friends my friends on facebook that she doesn't even know, and i don't know if i should tell her not to friend them, since its not really my business. how can i stop thinking about what she's doing, and how can i slowly drift myself and my friends away from her? none of this is in a bad way. thanks. basically, how can i get away from my best friend.