It's difficult not to be driven by the culture in which I am living.

The question is not so much whether it's difficult but whether you want to follow those values.

I'm personally busy enough trying to live up to my own values, that I don't put that much emphasis about trying to live up to other people's values.

At the moment you are probably trying to live up to the general values of your culture because your upbrining left you with low self confidence.

Additionally it's worth thinking about if you get into problems with other people besides your family if you would cut contact with your mother and father. Start thinking about the unthinkable in detail to make it less scary.

Once you done that the next step is being open and then letting the chips fall where they may. If you act in a way you consider to be right, then other people can choose how to react, so that they get a outcome that's also right for them.

I live in Poland, more catholic than the Pope, as I often say. Poland, which mentally is still under 19th century partitions,

There's free right to move within the EU. If you don't like the culture of the place you are living you are free to go somewhere else.