Without watching ourselves we can't be aware of the tricks the mind plays. So a yogi should be alert all the time. - Baba Hari Dass

Within the physical body every human being has a subtle body made up of invisible structures and energies (kundalini, nadis, and chakras); and within the subtle is the causal body out of which the subtle and physical bodies are formed.

Yoga is defined as a method – the process of nirodha (mental control) – by which union (the goal of yoga) is achieved. Yoga is therefore both the process of nirodha and the unqualified state of niruddha (the perfection of that process). The word yoga (union) implies duality (as in joining of two things or principles); the result of yoga is the nondual state..., or as the union of the lower self and higher Self. The nondual state is characterized by the absence of individuality; it can be described as eternal peace, pure love, Self-realization, or liberation.

Greed is a sickness of the mind. The more one hoards, the more greed increases. Giving with no expectation eliminates greed.