what can someone do to stop someone from trying to override ones free will?

Answer 1

Tell them to stop or else...then make it stick. It's called setting a limit or boundary. Not everyone who comes into our life stays in our life.

This sounds like one of those instances where you need to find out whether you really want to keep this person in your life as he/she is currently. I'm older, so don't have much tolerance now for someone who doesn't respect me.

We can't change someone who won't change, so the only thing we can do sometimes is to leave the relationship.

Answer 2

Resist.