Karma Kanda or action portion in human life is the path of pravritti. Pravritti means ‘going towards’: which refers to all actions towards attaining security, peace and happiness in the external world. The Brahmacharya and Grihasthashrama stages of life are the two parts of karma kanda in human life.
Jnana Kanda or pursuit of Self-realisation in human life is the path of nivritti. Nivritti means ‘getting away’: which refers to all actions aimed at avoiding insecurity, mental disturbances and sorrow. The Vanaprastha and Sannyasa stages of life are the parts of jnana kanda in human life.
There are a few rare people who find that their mind is already prepared and they want to devote themselves exclusively to the Pursuit of Knowledge of the Reality right from the stage of Brahmacharya and adopt Sannyasa in their youth itself.
Dr.Mahesh Chandra Panda