Give yourself a break from thinking and do something easy to get back in the swing. Choose an easy pattern that doesn't require a lot of focus to cut or sew. Pick up a couple of charm packs and sew a lap quilt or wall hanging. I too am easily distracted. I save the complicated stuff for when I'm home alone (which isn't often). Once I've got projects cut and bagged, it's easier to sit down and sew a few pieces. :)