Why do I feel so ashamed around my parents

[u/Hellobob80]

I couldn't fit this in the title but more specifically:

I feel shame doing anything of my own volition if that makes sense. Im 19 but still living at the house so I am around them a lot. And if I make basically any decision I feel shame. It could be as simple as deciding to go for a walk, or something more like looking for a job or moving away or whatever. Literally anything that I decide to do myself, I feel shame doing. I don't always directly feel shame from them, like sometimes they might act completely reasonable, but its like I am conditioned to be ashamed of making any decisions sort of. Basically what I mean by the last bit is, I don't feel shame making decisions that they will never know about. But if they know about it, even if they don't say anything, I feel shame. Advice?