It is not possible for the skull to physically change its shape in response to mood or mindset. The human skull is a rigid structure made up of bones that protect the brain and provide structural support to the head. It is highly unlikely for the bones of the skull to change shape based on emotions or thoughts.
However, what you might be experiencing is a subjective sensation related to muscle tension or posture. Emotions and mental states can influence muscle tension, especially in the neck and upper back region. When you experience different emotions or stress, you might unconsciously tighten or relax certain muscles in your head and neck area, which could give you the sensation of your head changing shape.
Additionally, changes in blood flow and vascular activity can also lead to sensations of pressure or warmth in the head, which may be associated with different emotional states.
It's important to remember that these sensations are subjective and not indicative of actual physical changes to the skull's shape. If you are concerned about any physical symptoms or sensations you are experiencing, it's always a good idea to consult a healthcare professional for a thorough evaluation and appropriate advice. They can help determine if there are any underlying issues or if the sensations are solely related to muscle tension or other benign causes.