You're probably right.
My basic thoughts when I play golf are "swing nice and easy, keep your eye on the ball, and take it one shot at a time." After coming back from a layoff, that's typically the only thing going on in my head.
Like many golfers, I have a tendency to come over the top. When I try and correct this, it starts adding layers to my though process. Then things start snowballing, and eventually I end up not knowing what I'm doing with my swing. This eventually leads me to quit for awhile so I can start fresh again later. Then the cycle starts over again.
Finding a balance between working on your swing and still keeping things simple seems to be the trick, but I certainly haven't figured out yet.