As a published author of poetry, short stories, flash fiction and a single novella, I will give you this single piece of advice; write everyday. Write whatever you want. For every word of gold you will write a thousand of rubbish. Yet buried within the useless tangle of thoughts will be the gold. I once wrote a speech which in turn inspired a short story, Poems can spring from a single image. Let the telling of the tale, the conveying of the message and the commentary on the subject itself be the purpose of writing. Also, never give up, keep trying and learn to accept rejection.