Hi Serena,
I’m sorry to hear that you are suffering. I am new, and still trying to wrap my head around some of these concepts that Buddhism teaches. I too place high value on what others thing or say about me. As I have been reading been and common sense tells us that this is not a good thing. I’m finding as I dig deeper into my deepest feelings and fears through meditation and mindfulness I find that there are some answers there. Continue to search for your answer, I’m sure it is within you, and if you need some guidance in the form of a book I recommend “Radical Acceptance” by Tara Brach. Plus, there are many good blogs on this site. I wish you peace.