A space where you as an individual has privacy, you have your boundaries respected, along with peace that you seek, a space where you can truly be yourself and be honest with yourself, that is how I’d describe a well-defined personal space.
Such a space for yourself does not come easy, if one has it, they should definitely be grateful for it. If not, the next question should be, what can be done about it?
What are the problems that does not let you have such a space? What are the reforms that you’d need to make? Can such a space be possible for you? Those are the questions you need to ask yourself if you think you need a space as mentioned above.