Reinvent myself..................?

i want to be different because i feel like i'm sick of the way i am i don't feel like i'm being myself but i don't know what myself is, i feel constantly bored and lonely and i feel like my teenage years are slipping i wanna look and be different and more confident and social but i don't know when and how to change... i feel sick of the friends i have now but i feel like i have no other option and i wish i had a social life.