self-conscious

She feels self-conscious about others’ opinions of her stamina.

At first, she would only got to the gym after midnight because she felt so self-conscious.

I wonder if the camera allows you to turn your eye outwards and not be self-conscious.

She added: "But I'm self-conscious talking to you about it today. I'm self-conscious about it, and I also think it's ridiculous to be self-conscious."

After enduring years of gruelling treatment for cancer as a child, Teifi Rowlands was left self-conscious about their appearance and uncomfortable in their own skin.