To often I see golfers at the range hitting ball after ball with no real goal in mind. In general we need to slow down and have a clear goal with each swing.
For example: when I'm warming up at the range I will hit shots using each club in the bag. When I have completed that I will then hit a driver and then change clubs to a 6 iron. Next I hit 3 wood followed by a 9 iron. What I'm doing is simulating the shots I will face on the course.
Try this and you will play better during your next round of golf.