Emptiness of self in person is not difficult to understand. The three components of the self in person are the body, mind, and activities of the body and mind; apart from these, there can be no other self in person. Using the logical reasoning of the Middle Way, we can establish these three components are empty.

To start, let’s investigate the body, not the mind. To establish the emptiness of self in person, we do not need to examine the body at the microscopic level; it is sufficient to just break the body down to a certain point.

Why is that? Because attachment to self in person is formed on the basis of the five aggregates at the gross level. When we know the gross body, mind, etc. do not exist, the foundation of attachment to self in person is damaged; once it is damaged, the attachment cannot survive on its own.

- Quote from The Four Seals of Dhama, "All Phenomena Lack Self-Existence"