For those not aware of Upanishads aka Vedanta: These are the philosophical texts with soul mysteries of nature, also known as last part of Vedas (4) and hence known as Vedanta ( Veda + anta-or end ) Since Adi Shankaracharya interpreted these teachings of Upanishads in non dualistic fashion so is his teachings known as " ADVAITA VEDANTA ". This thread is for some useful and substantial knowledge we can attain from Upanishads, learn and use some of the teachings in our practical life while pursuing various practices, these ancient scriptures are without a doubt really useful in the pursuit of Self-Actualization. Thanks.