Karma Yoga is a system which develops immunity to the reactive and negative components of an action. This awareness of action leads to a greater ability to manage mental associations in the form of desires, ambitions, ego and other personality complexes.
The aim of Karma Yoga is to gain freedom from the bondage of karma which restricts and inhibits dynamic, creative and constructive expression in life. In the Bhagavad Gita Sri Krishna has emphasised the need for action as a means to become truly human and attain divine grace.
Karma Yoga is a sadhana and not a practice. The state of Karma Yoga can be attained through seva (selfless involvement in all activities), the spirit of which can be imbibed under the guidance of a competent master.
The concepts of Karma Yoga, as a means to enhance human spirituality, have been described in Karma Sannyasa, Eighteen Yogas of the Gita, the Teachings series by Swami Satyananda Saraswati, and the Yoga Sadhana Panorama series.