Don’t be confused by Keats’s line “Beauty is truth, truth beauty.” Aim for truth, as it’s the necessary condition for beauty. It’s more difficult and more wonderful than you can imagine — and more painful, too, both in what-it-is and in the struggle to find and express it.
Don’t be impatient. Consider Hemingway: “All you have to do is write one true sentence. Write the truest sentence that you know.” Start there. You’re not going to publish a novel by age 20, but, if you work hard and keep working, you might write one true sentence by then. There are no shortcuts, and sounding true is not the same as true.