Its very hard to change how a person behaves. That is bec its equally hard to change how a person thinks.
In photography, your skills and "creative eye" are limited by your own set of thinking and to really break out of the hole that you dug urself in, you can do either one of the following :-
1. purposely shoot how you would never shoot
2. copy someone's else composition
I attended a Bride's theme shooting lately and i tried to modify my default shooting behavior as much as i could. I could already imagine and see how other photographers who participated in the event will end up getting the same images, so i tried to move anywhere that i don't see them moving to.