How did you learn to not let other people trigger you?

I’m a 26 y/o woman who grew up very sheltered. When someone mistreats me, I take it personally, no matter if a stranger or someone close to me. When someone is mean to me, I take it personally. It especially triggers me when I see those same people treat others nicely, because then it really feels personal.

I work in a female dominated field as a career, and as some of you may know, some women can be very mean. I want to stop ruminating and being triggered by individuals who are shady, assh*les, or just not nice people in general. Any advice would help bc I’m tired of living like this, and there’s no way I want to continue through life this way.