Hinduism has no single set of doctrines. Hindus generally view Brahman as the eternal origin and foundation of all existence but approach Brahman's divine manifestations in different ways. Hindus are often classified into three groups according to which form of Brahman they worship: Vaishnavas are those who worship Vishnu and Vishnu’s important incarnations Rama, Krishna, and Narasimha; Shaivas worship Shiva; and Shaktas worship the Mother Goddess, Shakti. Most Hindus believe that the true self (atman) of every person is eternal and that it passes through a cycle of successive lives (samsara) where its next incarnation is always dependent on how the previous life was lived (karma). Moksha is the end of the death and rebirth cycle that comes by overcoming ignorance and desires through one or several paths (yogas)—the path of love and devotion, the path of right action, the path of meditation, or the path of wisdom.