First of all, don't give yourself a hard time for having feelings.

I'll give you an example of mine. I work in a supermarket and I was on the checkout. I was slow at doing the job because I am fairly new to it. There was a customer in the line and she was rolling her eyes and tutting at me. At the time I took it personally and it made me feel bad but then I thought about it properly. This customer would have rolled her eyes at anyone and her reaction was about her, not me!