Bhagavad Gita a purely spiritual treatise has nothing to offer mankind relating to day-to-day activities of life. Spiritual journey is an inward journey towards the spirit, consciousness existing in our heart as soul atman. Bhagavad Gita deals with only the inner journey never the outward external manifest life.
Indulging in Bhagavad Gita human beings finally succeeded reaching state of enlightenment, self realization god realization.
Bhagavad Gita has at all no relationship with the manifest physical earthly journey undertaken by human form. Bhagavad Gita deals with the cosmic journey of soul atman of which initial 7.3 million manifestations are spent in insect, plant and animal life and the remaining 1.1 million manifestations in human form.
Out of 1.1 million manifestations in human form at the most it is purely the prerogative of human form went to cover spiritual journey. We can do it now in present life time or leave it for any of the future manifestations undertaken by our soul atman.
When six years of age I somehow developed inkling to see and meet god. Around nine years of age I finally decided to end my cosmic journey. I did not want to rotate in the endless cycles of birth and death. And thus started my indulgence with spirituality contained in Bhagavad Gita.
Bhagavad Gita was never about ambitions of manifest physical life. Even while indulging in day-to-day affairs of life one can seriously indulge in teachings of spirituality contained in Bhagavad Gita. I have done it all my life from six years of age.
We must always remember that earthly journey limited by a span of 70 to 80 years is temporal, ephemeral having nothing to do with inner journey of soul atman within.
On the earthly plane we can develop, promote any goal of life that was never directly linked to inner journey by soul atman.
From six years of age my inner journey continued without a pause even while I indulged in studies and thereafter business. Even while walking, jogging, swimming, studying, indulging in sports and also while conducting business my inner journey all the time continued without a break.
The most intricate part of life is maintaining a delicate balance between both life journeys.
JRD Tata and also King Janaka (father of Sita in Ramayana) were karma yogis par excellence. Both of them indulged in nishkama karma yoga conducting day-to-day affairs of life and simultaneously their inner journey of maintaining total purity all the time continued.
JRD Tata was not into Bhagavad Gita but all the time lived a very strictly disciplined routine of life as dictated in Bhagavad Gita. He is a perfect example of trusteeship concept of life. All his life JRD Tata worked for welfare of entire mankind all the time. He considered himself as a trustee and not the owner of Tata Empire.
King Janaka very successfully conducted affairs of his kingdom even while indulging in purely spirituality, the inner journey. King Janaka even though an enlightened one successfully indulged in affairs of his kingdom all the time!
In a nutshell, Bhagavad Gita is not about being ambitious in manifest physical life. Bhagavad Gita simply tells us to be spiritual so that we could follow the inner journey seriously. After all we are a spiritual being, a spirit, consciousness that manifested human form to work out its karma, remove dross impurities within.