Be passionate about what you write, believe in your ability to convey timeless ideas, and let no one tell you what what you're capable of.
Every emotion, every phrase or sentence, every bit of human action, can be a form of art. Art is not necessarily bound to the stereotypical notions of the human society. Art can come in the form of a little sentence, art can come in the form of a simple brush-stroke, art can come in the form of an everyday snapshot, art can come in the form of a plain strumming on the fret of an old guitar. Art doesn't require definition, and more importantly, art cannot be bound by the descriptions of words, yet words themselves can form the most rejuvenating and liberating form of art.