Aiming is one of the most important thing in golf. If you hit a perfectly straight shot it means nothing if your not aligned properly. Alignment can also cause you to hit bad shots. The brain performs tasks on a conscious and subconscious level.  By miss-aligning your self your brain will tell your arms to compensate by moving to the left or right: i.e.  If your aiming too much to the left without even being aware of it you will  swing your arms to the right. This will cause you to hit shots fat and thin. 

My suggestion is to go to the range and practice your alignment. Take three golf clubs. The one you want to hit and too others. Place one in front of your golf ball pointing to the target, and another in front of your toe line pointing to the left of the target (right for lefties).  Once you've hit a good ten baskets using this drill your eye will ajust and align itself on the golf course without needing to place two clubs on the floor.

Most people think they are aligning themselves incorrectly when they hit a bad shot, but it is probably due to curvature in ones ball flight. That why it is important to make sure you are aligned properly to see if it was your alignment that was causing your to hook or slice or your golf swing.  It is important to note that is you have a slight draw or fade with your iron it will be more pronounced with your longer clubs like the driver. That's why you should find out how much each club draws or fades and how to align yourself properly.

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