Just don't let your head drop down.

Standing too close to the ball is the root of most swing faults.  You come over the top or take too steep of a swing to avoid a shank..Key giveaway is a heel hit.

Lou, it's not standing too close to the ball. I fixed that issue earlier in the season. As aforementioned, from the beginning of June until a few days ago, I played my best golf, and I attributed that to standing further from the ball. I was shanking everything before that. I hit every club in my bag outstandingly. I had all the confidence in the world hitting my 4 iron because I hit it crisp every time. Now with my 4 thru 6 irons, my divots are so steep. I'm striking the ball so steep that the ball is hitting the clubface in the center, but way too high. Maybe 2 grooves from the top of the club. At the same time, the course I've been playing has been extremely dry over the past week or so because we've had temps in the high 80s-90s, and the ground is like a rock. Maybe that has something to do with it? I don't know.

Can you get a video taken of your swing with a digital camera? Perhaps one that allows you to review the video while on the range—that way you can make immediate adjustments based on the actual video feedback.

Regarding whether you are too close or too far is a matter of where your natural swing plane drops when you swing with the correct posture and stance. Again video is very helpful here.

You should also pay close attention to how tight your right elbow is in relationship to your right side. You'll notice that the best ball strikers on tour keep there elbow very tight to their body. A few years back at the Deutsche Bank I was watching VJ practice with a towel tucked under his right arm pit, a drill he uses to keep the right elbow in line with his right side.

If this doesn't help, I'd seek the guidance of your local PGA Pro, they can take most of the guesswork out and provide useful drills to help reinforce correct posture and swing plan (and any other issues that they may detect). 

Cheers!

About 90 percent of swing faults are caused by standing too close to the ball.