I do believe that writing is an art. But it’s also a craft.
No one can write your stories but you. No one can create exactly as you can.
No one else on earth has your “voice.” But there are tips and little techniques that you can learn to make the work easier for you. Just as an artist learns to mix colors, what glaze or wash will enhance a color, or make water look "wet" so will a writer learn how to get across to the reader the story that goes on in his or her head.
Getting the "story in your head" onto the page is the hardest work in the world.