@Wheelyweddingwipedout Oh, I feel the sadness in your words 😥 Our personalities are largely formed in our early years but they are not, as previously believed, then fixed for the rest of our lives.
Let me explain (you might want to sit down, it's long). When we are born we are 100% selfish, 100% ruled by our subconscious. Hunger? Tiredness? Need changing? No problem in expressing our needs and bugger what anyone else wants!
As we become aware of the people around us we try to make sense of who they are, whether they can be trusted, who WE are, how we fit into the small world of parents, siblings, grandparents and then the larger world of neighbours, teachers, school friends, strangers, etc. Children are little mean making sponges - absorbing information more rapidly than at any other time in their lives and trying to make sense of it; often with limited knowledge or incorrect or misunderstood assumptions.
At this stage there is no conscious, rational, logical mind to weigh up facts and arrive at a nuanced, objective conclusion. Proof? Ask a 5 year old to believe Father Christmas can visit every house in the world in one night in a sleigh pulled by wingless reindeer and he/she will accept it absolutely. In the same way if grandma screams when she sees a spider then that is obviously the correct response to spiders as grandma can't be wrong.
So, if we believe that drawing attention to our needs is impolite, or that we should be passive to be seen as 'nice', then that becomes part of who we are. These personality traits we learn from the significant people around us are inherited from their own upbringings or early year experiences and can go back for generations. Sometimes we rebel and go in completely the other direction (for good or bad) and sometimes we seek help to understand and change the way we perceive ourselves and others.
I don't want to get into counselling you or offering therapy in a public post but, if you are interested, please contact me. I can help you.