Karma yoga 11.20 of the "Bhagavata Purana" states that there are only three means to spiritual liberation: "jnana yoga" (knowledge), "karma yoga" (action) and "bhakti yoga" (devotion). Those who are of philosophical bent, prefer the "knowledge path". Those who are inclined to productive application of arts, skills and knowledge, prefer the "karma path". Those who prefer emotional connection, prefer the "devotional path". These three paths overlap, with different relative emphasis. Discussions on Karma yoga are also found in chapter 33 of "Narada Purana". Later, new movements within Hinduism added raja yoga as the fourth spiritual path, but this is not universally accepted
Karma This effect may be material, moral or emotional — that is, one's karma affects one's happiness and unhappiness. The effect of karma need not be immediate; the effect of karma can be later in one's current life, and in some schools it extends to future lives. The consequence or effects of one's karma can be described in two forms: "phalas" and "samskaras". A "phala" (literally, fruit or result) is the visible or invisible effect that is typically immediate or within the current life. In contrast, "samskaras" are invisible effects, produced inside the actor because of the karma, transforming the agent