Start writing on the subject that comes naturally to you. The idea is that you may think that you determine what you write. But from the ideas that possesses you you begin to see how your writing is shaped. Writing iis thinking and as you develop your writing skills you'll begin to see who you really are. don't send a lot of your time thinking about what you gain at the present moment , but rather spend your effort to none your writing skills. as you begin to see what works you'll will than begin to challenge yourself to write in other areas. Follow your intuition and see what happens! I hope this helps.