To overcome discrimination (or any challenges), we need to follow the 3 Ps:
Pray. I'm sure you already know why. God is the answer to everything.
Proof. Prove to those who discriminate you that you are not weak, that there are things that you can do that they do not know despite the bad things they say to you. Show them what you are made of!
Positive-thinking. Don't think negative things. It can lessen your self confidence. If you are discriminated, face it. I'm sure there is a reason why you're experiencing it. Be strong. Be yourself. Be positive!
(It's okay if you don't copy the explanation. That is self-explanatory. I'm not that confident in my answer .__.)