Do you think that I am prejudiced?

Even if I don't talk to someone, I can be sure of the type of person that person is.. that person's appearance and facial expression also guide my thoughts and I stay away from people I understand to be bad as much as possible. People say that I am prejudiced and they start to condemn me.. I just spoke to someone who wrote about her mental illness in her biography. "I'm sure you don't have one of those diseases," I said. "My doctor diagnosed me, I am taking medication. I have never encountered such a prejudice in my life," she said.

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English is not my first language, so, sorry if i said anything wrong
Do you think that I am prejudiced?
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