School Picture Day

I’m a school teacher and every year the past few years I have dreaded school picture day because I don’t like the way I look in pictures. I know I have to take a picture each year for the yearbook but when I see my picture it reminds me of the weight I haven’ t lost yet and I judge myself and feel terrible. Once I almost cried right in front of the photographer after I checked my picture in his camera. How do I get through this day and not feel terrible about myself?