I lost my scrapping mojo last year, I was busy at work (I work part time 5-6 hours a day but it was so busy last year, they asked us to do full time every day for few months) and I work early shift (start at 6am)
so after work, pick up kids, prepped dinner and everything, I was so dead tired...
But few of designers that I CT'd for also retired or took a break from designing so it's kind of break time for me and that works well.
I'm back to scrap again this year but not close to where I was before (page counts wise) because I think I'm not completely back but I'm quite happy with that.
I agree with everyone that taking a break will help especially when you're busy and my opinion - this hobby or any hobby, it should be an enjoyable outlet for us, not a burden.