Keep in mind this was only your second session. I understand wanting to get to your "Why's" asap, but these things can't be rushed. Give your IC some time. If its still bothering you then just come out and tell him/her directly your concerns.
Also, if ADD is suspected make sure you get a proper diagnosis from a psychiatrist who specializes in ADD/ADHD. If you do end up learning you have ADD or possibly something else, read up on it. Take your meds if prescribed and keep working.
Look at it from this angle, when you put on weight it was quick and easy and you didn't really notice how fat you got until you couldn't button your pants and even then you could be in denial, "oh these jeans just came out of the dryer" or, "I dont know why I have all this cellulite all of a sudden. Must be the fork that's making me fat or the wife's cooking or the moon isn't alingned right" etc instead of admitting you ate junk and sweets every night and was a couch potato. You put on 5, 10, 15 lbs and it was almost unnoticeable and so easy to do and so quick! So when the time comes when you admit hey, its my fault for putting on weight not anyone else's. You start eating right and exercising and guess what? Its hard! Its discouraging and takes sooooo long and you have to not only make changes but lifelong changes perminate healthy changes of diet and exercise!! This metaphor maybe isn't the best, but I think you know what I'm getting at.