Reality, A Projection Of Human Thought?

I've always thought there is one reality which is translated by each brain into one's own reality. Many realities can appear similar because of nationality, religion or other common factors.

Taking a stretch, each one of us has a willpower. Out of all realities one is the strongest and one the weakest. One wants to become a police officer and fight crime, that one is using willpower and another one can be motivated to create crimes so the police officer can fight the crimes. The same works with doctors, a doctor wants to operate on people, people are motivated by his or her will and create accidents. Other uses of willpower is one wants to built houses, another wants a house, all these realities work with eachother.

Spirits can interact with one's reality, they are the same as the 'living' (although spirits are not inactive or 'dead') except they are not bound by physical rules in their reality because they do not have a body translating that one reality.