Is she purposely hurting me?

My friend sd to me once that she doesn't have a life..okay she has a job, a nice car, her own apartment, friends, looks, and she's going to school.  She has the nerve to tell me of all people that she doesn't have a life?  Hello!?  I don't have a car or a job or my own place,and I'm not going to school! I did once have looks but over the past year I have been so depressed that I have gained so much weight.  Yes, I know that this is all my fault but everytime she comes over she talks about how much she's accomplished and it really brings me down.  Don't get me wrong now, I'm proud of her and happy for her.  I know she doesn't do it on purpose but it really bothers me.  She goes on and on how much weight she's lost and that she's so hot now.  Yes, she is very pretty and I would love to have her body and her personality.  She's really sweet. Meanwhile here I am fat and depressed, and mean as hell.  Yes she is a good friend and I'm happy for her cause she's been through a lot of crap like I have over the years. What am I supposed to do?  I'm straightening my life out now.  I'm in the process of getting a car (hopefully this wknd) and then I'm going to get a job and my own place and as soon as I save money I'm going back to school.  I still want her to be my friend but I don't know how to tell her how much she upsets me.