1) Tantric practice 
Chöd ({bo|t=གཅོད|w=gcod} lit. `to sever`), is a spiritual practice found primarily in Tibetan Buddhism. Also known as `Cutting Through the Ego,` the practice is based on the Prajñāpāramitā or `Perfection of Wisdom` sutras which expound the `emptiness` concept of Buddhist philosophy. According to Mahayana Buddhists, emptiness i...