know, family and friends just because i myself have not been in a good place. reporter: she is slowly trying to stop demonizing food and tells us, since filming, she s made major progress and says she s no longer obsessing over what she eats. recovery is not easy. and it s extremely easy to get down on yourself. but i know that i can do this. and i think just knowing that i can, if i try hard enough, is enough to push me to succeed. reporter: for nightline, i m juju chang in new york. what a big moment just to admit you have this and something needs to be done. and to think we essentially talk about healthy eating. eating stuff that s supposed to be good for you. it becomes an obsession in itself. and social media. isn t it amazing how things can take off. we have a new eating disorder because of social media. think about how many people i take pictures of food i m eating and tweet it out. especially when i travel. i want people to know interesting places. we re goi