This is a very typical experience of too many people including my own self. However, the only person you can fix or control is you. The only person you can work on is yourself. My recommendation is to sit with yourself and decide what is their draconian expectations and what is truly your problem. Leave everything that is theirs behind and only worry about what is yours. It won't seem like you're a "good son" but too often being a good son means co-dependency and excess control. Don't hand your very real power away to someone else. You will always be in the wrong, you will never do it right for them and you will never get what you are looking for. I do not say this to hurt you but to help you to an important realization. You are you and they are sick and trying to infect you with their disease. It's time to walk away.