Karma Yoga -- The Way of Work -- is for the active type of person. There are two modes.
A. emotional mode. Work with no attachment to success, focused on one's duty to the community.
B. reflective mode. Witnessing of self, focused on duty with no notion of profit.
In either mode, the essential ingredient is selfless devotion to service.
In modernity, the one person most known for selfless devotion to service is undoubtedly Mother Teresa. She was already a nun, traveling to her new home convent in Calcutta, when she got what she described as "the Call within the Call," to serve the needs of the poor and hungry. She explained that this was a command from heaven.
(full article -- wp.me/p2ukOd-5S)