Except for warm-up purposes on the first tee, I never take a practice swing prior to a full shot. I want to and I think my scores would improve if I did, but I cannot make myself do it. It's a psychological hangup. The few times I've forced myself to try, they've been half-hearted half-swings just to get them over with as quickly as possible.
For one thing, I'm worried about "wasting" a good swing without a ball. For another, I'm in a hurry to get to the "real deal" and just don't want to spend the time that a practice swing consumes.
Does anybody have any advice as to how to get over a mental block like this.