The word "dharma" has multiple meanings and no single translation in the English language. In Hinduism it refers to duty, virtue and "right way of living". It is translated by some to mean your vocation or your "true calling". For many of us, finding our "true calling" is a lifetime journey.
I recently finished reading Stephen Cope's book, "The Great Work of Your Life" (A guide for the journey to your true calling), which parallels Krishna's mentoring of Arjuna in the Bhag