I started hand sewing when I was five, machine sewing when I was nine, and quilting at 14. So, I've been doing this kind of work for over fifty years. I've noticed over the years that I sometimes get bored with quilting. I worked as a commercial artist for years so I think I've focused my creativity on my job, and when I got home I had no creative mojo left for quilting. I've found that as long as I keep my creative juices flowing in other ways, when I come back to quilting I slide right back in, but with a new outlook and enthusiasm.
A break now and then is a very positive thing, if only because I have an excuse to buy new fabric because what I have is so dated!