Learn to love your body, be confident and be proud, don't worry about what other people are doing or saying, look at yourself in the mirror and tell your self " I am beautiful ", " I am proud", "I am unique", " I Love who I am and I am happy".
Don't change anything about your body if you are happy about your body, and don't want to change anything about it, it doesn't have to be perfect, and nobody is, remember that.
Don't ever change for anyone else, unless there is something YOU really want to change about your body or diet, and for health reasons, not because you are comparing yourself to someone else, or want to be like someone else, or have what they have.
Every time you see a post, a video or blog about what seems to be a perfect body, remember that, it is all about pose, unhealthy, unsustainable diets and hours at a gym on a workout, not too many people can uphold.
Social media as friendly as it can be, can also be poisonous to the mind, giving you the wrong impression and idea about what the " perfect " body should look like.
As long as you are happy with what you look like, and you can be proud and dress up every single day, that is what is important.
Find a sustainable lifestyle that suits you and that you enjoy eating, as long as it is balanced and it makes you feel good, and you feel you are benefiting from it, then stick to it.
Don't swing in and out of all the diets that you see everyday, trying the quick fixes, those do not work. It is guaranteed, and you may lose weight but you are sure to put it back on, when you start to eat fractionally normally again, because those restricted diets are difficult to sustain, it puts to much stress on your body and not every one is cut out for it.
We are all different, and we should respect and honor the fact that you are not the same as the girl next door, maybe she idolizes you, ever thought about that ?
look up to yourself and be proud.