If you are a 5 handicapp, it probably something minor.
Grip check grip to make sure it is strong enough. you grip may be too weak and unable to square the club at impact check proper placement of the club etc.
Alignment - check to make sure your shoulders are basically square at address. Open shoulders can cause you to come across the ball and go right
Stance - make sure you have enough spine tilt, butt out and knees slightly flexed in a good athletic postion. If you don't have enough tilt, you may be taking the club too much inside and it could be getting stuck back there.