Yeah, those photo wake up calls are awful, aren't they??
You have certainly come to the right place. What you might want to do rather than dive head first into things, is to take a week and write down everything you eat. That way you will understand where most of your calories are coming from, and where you can start to make changes. Doing one change at a time is much easier than trying to rework yourself overnight. And it is sustainable change for a lifetime.