How to get my parents believe I am responsible.?

Well, my mom took my fone away cuz well... idk. But i ddnt do anything. When i ask if i can have a bf, she says she needs to know him. My mom is hard to please, so having a ghud enuf bf for me in her eyes is complicated. I like to sing, but she says if i try to get famous, that when i do get successful, she says that the audience is heading me in the wrong direction. help.! how do i get here 2 believe im ready for this life.?