Of course, to be a writer you have to write. But of equal importance to the writing element is you have to be read. There are many different ways to be read, but rest assured that for all the fantastic poetry and prose you scribble in your fancy notebook and for all the standing up on stage you do at open mic nights, you will never be never be read if you do not approach the media.
Of course you could argue that you write for yourself, which is fine, but if that is your take on writing then this post is not directed at you. And even if that is your take, you probably want to write for someone someday.