There are many things that motivate me to write.
I write, mainly, because I feel writing is an amazing way to do multiple things at once. I want to tell a story. I want give light to very important issues in the world or issues I feel strongly about, or even want to learn more about. I want to imagine, and create different worlds that I would love to share with other's. It's very personal for me, because a lot of times, writing a story is sharing thoughts that have been in my mind for such a long time, or lessons that I have learned throughout my life.
Writing gives me the opportunity to imagine, discover new worlds I never even thought were possible until I think, "what if," and write it down. It's the best way for me to see something in my head, and then make it as tangible as I can. It definitely helps with my creativity.
One of my muses is simply reading anything I can find. Whether it's reading about different cultures to different fantasy worlds or if it's in a fiction novel or a newspaper or an essay, it helps me get a broader perspective on what I can write about. And I feel that's a very important thing to have when writing, because it opens your mind to different possibilities. The only thing I can really recommend, which helps me, is to read more to write more.
Okay, I'll stop before I ramble on haha.