How can I get myself motivated so I want to keep on writing?

[Maxwell]

I too, am an aspiring writer as well as artist and I have had that problem too, although I've personally only written short stories at this point. Anyway, as for advice to help you keep writing, I have several tips.
1. Read stories or chapters of books written by your favorite authors and then imagine how it would feel to have them reading a story written by you.
2. Try and think about how you would feel to actually have a novel published and receiving money for something that came from your mind.
3. Write to please yourself, if you truly want to be a writer, write the kind of stuff that interests you and don't write with your audience in mind trying to endless please other people.
4. Get dictionaries and thesauruses to help improve your vocabulary and strengthen your writing.
5. Imagine your book becoming a best seller and how happy that would make you!
6. Imagine if your book was adapted into a film and how that would make you feel!