I've been working on a fantasy-mystery series for the past year or so. I've written and published 3 books in the series (self-pubbed), and I estimate it'll take another 3 or 4 books before it's done. I've been having a very hard time starting the fourth book, and recently I've been kicking around the idea of working on another idea that's been on hold while I've been writing the series. I think I'm having a bit of burnout on the series, although I've enjoyed writing it and fully intend to finish it. Is it wrong to take a break and work on something else for a while? I'm excited about the new project but I feel guilty about "abandoning" the series before it's done.