There are three levels of feelings. One way is caused by physical sensations for example if you were to peer over the edge of a tall building to the ground below. It can cause an involuntary feeling of fear. It’s a reaction that moves straight from the survival brain into the nervous system of the body, without going through the brain. Soon after, we process the experience through the brain and think a thought that either intensifies the fear (“I could fall and die!”) or lessens the fear (“I’m safe up here. What an amazing view!”). The third level is from looping programs in the subconscious we call “Core Beliefs.” You may have a core belief regarding a fear of heights that got lodged in there from a bad experience that’s not been resolved. It’s still stored in the trauma center of the brain, causing an overreaction when in a similar situation. You may instead have a core belief regarding being comfortable with heights, causing you to view the situation from a more positive perspective. For the sake of this work, the most important distinction is in understanding that our thoughts and core beliefs—not external circumstances or other people—cause our feelings. Even with involuntary physical reactions, the feeling would then be intensified or lessened by our thoughts and core beliefs.