Mostly I change myself, although when I was in a relationship with another AB he changed me sometimes (I changed him, too). And, my 'daddy' says he'll change me when he comes to visit...so I dunno how to answer the poll question.
Good question... but you might want to reword it to a multiple-choice selection along the lines of :
"Which of the following have changed you after the age of 14?"
* Your parents
* Your friends
* Your other family
* Random strangers
Otherwise people who have been occasionally changed by others won't necessarily know how to answer.