I found that certain people didn't want to know me when I became mentally ill and even stigmatized me.That felt bad for a long time and combined with certain medication caused me to withdraw and isolate myself.The good thing was when I did meet the right people in real life they were people who accepted me for who I am regardless of whether I had mental illness or not and I find the good people don't reject me or let me down or discriminate or use my illness against me and the bad people do all of that,so it isn't you or the illness it is that those people rejecting you for it aren't good or worth knowing.I hope you find this out in your own way and that is helps you to feel better about yourself and being ill.