Like the body, you are in space. In mind, you are on time. But are you a mere body with a mind in it? Have you ever investigated?
Why not investigate the very idea of the body? Does the mind appear in the body or the body in the mind? Surely there must be a mind to conceive the I-am-the-body idea. A body without a mind cannot be 'my body'. 'My body' is invariably absent when the mind is in abeyance. It is also absent when the mind is deeply engaged in thoughts and feelings.
In this I Am Not The Body Book of key spiritual teachings from unpublished discourses, the great Advaita master, Sri Nisargadatta Maharaj, teaches us that we are not limited to the body. Because of our mistaken body identity, we feel separate from what we truly are. Our self-identification with the body and mind subjects us to endless cycles of pleasure and pain, desire and fear, which cause us to search beyond ourselves for that which we believe we lack.