Perhaps, take the approach of treating yourself the way you'd want others to treat you. (MUCH easier said than done, I know). This strategy will not only provide you satisfaction for your own self with self, but also, will set the example of how others view you. And even if they cannot see beyond their own selves, then, perhaps their opinion isn't worth a thought given, anyway, despite if they are family, or not.
Just because you are born into that group of relatives does not mean that you are committed to upholding their opinions of who they think you should be.

Be true to yourself while doing your best to sustain what others are dumping on you, especially in a family environment, such as what you are presently forced to endure.

I've been through similar to what you're going through. It was hell for me. I was the black sheep, never fitting suit. I simply didn't belong there. I did what I could to endure the best I knew how.

Devote your attention inward. Find what makes you happy about yourself and nurture that. Only you know what works for you. So long as you strive for improvement, who the hell cares what anyone else thinks. Chances are, they're only jealous in their own right.

I wish you the very best of luck.
Hang in there...

Shangrala