Read! Read a lot of both fiction and non-fiction, and stretch yourself in your reading: if you only read about lives that are similar to yours, you're limiting yourself. The wider we read, the more open to new writing we become - as well as gaining a freedom to take the huge leap that is the start of writing,all writing. I would tell you to repeat one word, over and over to yourself: courage! You have to find the bravery to not only take a chance on exposing what's in your head and your heart, but you will have to be brave and disciplined enough to stay with it for a long time.