There are many ways to find your voice and to keep yourself "RAW". This is also a good way to spark some inspiration on your next book. Pick a word any word at random and take 3 minuets to write something about it. You will be amazed and what your mind can come up with.
When I started doing these exercises, I really didn't know what my true voice was. I was given the world "Leaving" and what came out was dark, mysterious, deep, passionate. I didn't realize that I gravitate more towards the dark side of romance. Try it our and maybe you'll learn something new about yourself.
Try using this link for random words. www.watchout4snakes.com/creativitytools/main/main.aspx
Good luck and just have fun with it!