Publishing a boook....?how?

I am 16 and very interested in the mind, consciousness and spiritual enlightenment. I went through an experience that could have been described almost as bipolar mania and depression, but I came through it and I almost relate it to a spiritual journey, how we must go through it to evolve mentally. I want to write a novel, but can I? Can I write something like this and send it to a publisher? Ir is that too odd? It's not a fantasy(I guess I could make it one)