I would try to recognize that the badmouther is the one with the problem, not you! All those things she says might be true but you already know them? Learn to "know" yourself realistically and accept that you have X problem and you're working on it and other people can't use the "information" anymore to hurt you because you already know, it's old news? Value yourself and KNOW you are smart and people's comments to the contrary won't "make sense". Your mother wears combat boots! Whether she does or doesn't, that wouldn't hurt you because it's just a "fact" and you know she's in the Army :-) and they don't.