> I see this as one of my major flaws and try hard to mask how I feel.

It's not a flaw. You're learning. Don't judge the sapling as if it's a full grown tree. For me, acknowledging my "bad" feelings was the thing that helped me deal with them constructively the most.

Even better, talk about them with peers you feel safe with. Say "your comment brings up feelings of... In me." instead of "you make me feel...". With the right person, that's a doorway into mutual understanding and reframig the experience for yourself.

Everybody has these feelings, you'll find out.