By setting boundaries!
Sound simple but also for me it’s very new
First of all you need to feel where’s your boundarie, means What meets your personal values.
For me this is already a small challenge , since I’m hearing more than a decade from my husband that my family it third class , that I “grew up with out parents, so how can I possibly teach anything to my children “ etc..
I’ve allowed him saying that such a long time it’s almost unbelievable
I don’t claim I come from a royal family but that’s not the point!
He cannot insult my family! ( out of his frustration for other things..)