
Krishna begins listing what constitutes the field. The five great elements (earth, water, fire, air, space) form the physical body. Ego (ahaṅkāra) is the sense of 'I' that identifies with the body. Intellect (buddhi) is the faculty of discrimination. The unmanifest (avyakta) is the source from which everything arises. The ten senses (five of perception, five of action) are your means of experiencing the world. The five objects of the senses are what you perceive. All of this—your entire experience—is the field. Most people think they are these things. But you're not. You're the knower who experiences them. This list helps you recognize everything that's part of the field, so you can distinguish it from the knower.
How this ancient wisdom applies to your daily life

Krishna lists what constitutes the field: the five great elements (your physical body), ego (your sense of 'I'), intellect (your discrimination), the unmanifest (the source), the ten senses (your means of experience), and the five objects of the senses (what you perceive). Everything you experience is the field. Your body is the field. Your mind is the field. Your senses are the field. Your perceptions are the field. Most people think they are these things. They say 'I am my body' or 'I am my mind' or 'I am my thoughts.' But you're not. You're the knower who experiences all of this. The field is everything you can observe, experience, or identify with. The knower is what observes, experiences, and identifies. When you recognize this distinction, you can use the field—your body, mind, senses, intellect—without being defined by it. The field changes constantly. The elements shift, ego fluctuates, intellect varies, senses change, perceptions evolve. But the knower—you—remains constant. This list helps you recognize everything that's part of the field, so you can distinguish it from the knower. The field is what you have. The knower is what you are.

What parts of the field do you identify with? Your body? Your ego? Your intellect? Your senses? Your thoughts? What would change if you recognized all of these as the field, separate from the knower—you?