Change is inevitable. We all do this, even if we do not realize it, and the truth is that it is healthy as long as we are not forced to do so. No one can ask us to change, either morally or physically. What worries me is people who change to please others, and end up never being good enough. Like if somebody does not love you like you are, maybe a few pounds less will not make a difference, even if that person you're trying to please is you. Before you try to change anything about yourself, make sure you are doing it for yourself and not for someone else. And never forget to be the best version of yourself, because if you do not love yourself, you can not expect someone else to do it.