Just by having a mere talent in writing is not enough to become the best writer. There are ways that you need to commit to for you to become the best in this field. You certainly need the passion, of course, but without actions, you can never end up with a commendable work.
To become a great writer, you need to read and learn every day. Consider attending classes and writing training and workshops to improve your skills even more. You need to spend time doing research. The more you know, the better your writing will be. There are actually so many ways on how to become a writer. You just need to have that willingness and enthusiasm to discover these ways, learn and put these ways into action.