I have just handed over a manuscript to be edited. I want to take a break, but I don't believe its possible. I already have over 5k written on another book.
I know lots of people who work on more than one book at a time. I can't, I have to give my all to just one book at a time.
I am also trying different genres to see where my talents lie. I have done erotica, YA Fantasy/Adventure, the one to be published is Romantic/Fantasy/Werewolf, and the one I have started on is about Vampires. So far I have been in love with everyone, I guess the proof will be in the pudding; i.e. the sales!