Is it the same with women? How are they alike? How do they differ?

Context: fucking cry baby at work. Apparently is jealous of me and constantly gives me shit when I'm just trying to do my job. Think mommy daddy issues, not enough attention at home low self esteem type frame. Not supervisor, but co-worker from another team that I work alongside with/next to at times. When I do something that pisses him off (blow him off when he gives me orders) he whines to his supervisor! Supervisor privately says to me Don't take it personal, If he does that just come talk to me. In other words, he's not doing shit about it...

Anyways, I just want to clock his ass and assert dominance, like set a boundary to let him know that shit does not fly, but that will get me fired. He really irks me and it's a distraction at work because I need to set a boundary of the bad behavior will continue.

When he tries to assert himself, I don't know what frame to hold so I default to Whatever and they to ignore him, but it's not working.

I'm not sure what my goal should be. I'm not sure what frame to hold in my mind whenever he tries to assert himself so I just flounder without setting any clear boundary/pretty much allow him to walk all over me and get away with it.

Anyone with experience?

Please help me stop men taking advantage of me, TRP!

About me: Mostly raised by mom. Hard for me to set boundaries with other assertive/aggressive men. This is new to me but I know I need to take care of this now myself (not crying to someone higher everytime this happens in life) or this will continue in my life forever until it slowly kills me.

One of my major problems is speaking up/speaking my mind. I feel uncomfortable speaking my mind so I tend to stay quiet and not take any risks. This is the core of the issue. I don't really need to learn what to say to assholes, but how to feel important enough in the face of conflict/aggression to assert myself and risk the odds, good or bad. I believe it's better to take the risk and assert myself then take the passive way out and love in fear and silence like a pushover.

Currently using mobile. Will search for relevant posts later. Feel free to post threads that might help with these kinds of situations.

Thank you!