Meee just confused........?????????

ok sooo im a 13 year old girl and i dont know whts wrong wid mee cuz whn i see someone i just want to be like them i copy their hairstyles and the way they dress i dont know wht to do cuz i dont know how to be me i like things that other people like but whn im alone i realize i dont even like that i just dont know wht to do HELP!!!!!!!!!!