I've got the concentration span of a gnat right now. It could be down to recent events or perhaps just the fact that creative minds sometimes work faster than creative hands!
I got a great tip from Driftwood who suggested that larger, more intense projects could be tackled by doing all the middles first. In just a couple of sittings with Judge Judy for company (love that woman!) I've done all the middles for my table runner and it really doesn't seem like such a huge repetitive undertaking now. Happy days.