You're not David Duval or Annika Sorenstam. Those two can get away with lifting their heads before, during, or just after impact. You? Me? We've gotta keep our heads down, because when our head comes up, our whole body comes up. We hit shots thin, we hit shots right, and we hack our way around the course.
Simple solution: get in the habit of feeling your right shoulder on your chin before checking out the ball flight. As your arms swing through the ball, your head will naturally come up because your right shoulder forces it up. Swing normally, but focus on letting your head be pushed up, not lifting it up yourself.
Do this right and you'll see the club pass through the ball and take the divot. What's the point in looking up if you're only going to see a bad shot?