People always say be yourself. but..?!

People always say be yourself. but..?

Is there really such thing as being yourself? I mean i can understand not acting a way that feels unnatural? or fake just so you can be accepted or a way that you dont like so you can be accepted or looked at better. But what is being yourself? Arent we all influanced by others and our surroundings? doesnt that make us? So are we really an individual by nature or something? or do we chose how we want to be and that is ourself? What if i dont like the way i am and i know i have flaws, hell. i dont want to be myself, but i want to change for the better. not for someone else, but for myself. So how do i start changing for the better? I have pushed all of my old friends away by being a prick. And i have pushed anyone who looked up to me away by being an asshole. i am tired of it. advise?

I kinda the same problem and i was change for the better and be a person i'd like to be. But its hard to figure out how to change and who you wanna be. I know i'll change throught things that happen in the future and one day i'll discover me and i'll be the person i wanna be. I'll get there at this time right now i'm just gonna be who i know to be, who i've been for as long as i remember and i'll change eventually and find myself. So just try and be who u want to..........