Long days followed by longer nights You can't do nothin' right when you're thirteen And it feels like you know best But your mama says girl not yet She don't understand you feel more ready then you've ever been And the girls in school try to knock you down You don't see 'em smile unless you're wearing a frown And you wish that you were on the other side where grass looks green So let me tell you now Don't you worry time will go by fast The girls that call you names have their own scars Don't tell your mother that you hate her When she's just tryin' to make you laugh Don't be scared of standing out in the crowd Cos' one day you're gonna do yourself proud If only I could tell my younger self What I know now Whoa ♪ You're older now but still you're feeling insecure Your emotions leave you on the floor Now you're fifteen And now you've reached that middle age Where all you want is just to get away But you still can't drive And wouldn't know where to go anyway Yeah And all those doubts inside your head are gonna stop you from trying But every time you fail you're gonna come back fighting So, don't you worry time will go by fast The girls that call you names have their own scars Don't tell your mother that you hate her When she's just tryin' to make you laugh Don't be scared of standing out in the crowd Cos' one day you're gonna do yourself proud If only I could tell my younger self What I know now Whoa Wish I could tell my younger self Wish I could tell my younger self Wish I could tell my younger self What I could tell my younger self Wish I could tell my younger self Wish I could tell my younger self Wish I could tell my younger self What I could tell my younger self Don't you worry time will go by fast The girls that call you names have their own scars Don't tell your mother that you hate her When she's just tryin' to make you laugh Don't be scared of standing out in the crowd Cos' one day you're gonna do yourself proud If only I could tell my younger self What I know now Wish I could tell my younger self Wish I could Whoa Wish I could tell my younger self (what I know now) What I know now What I know now Wish I could tell my younger self What I know now