नियतं कुरु कर्म त्वं कर्म ज्यायो ह्यकर्मणः।
शरीरयात्रापि च ते न प्रसिद्ध्येदकर्मणः।।3.8।।
।।3.8।। तुम (अपने) नियत (कर्तव्य) कर्म करो क्योंकि अकर्म से श्रेष्ठ कर्म है। तुम्हारे अकर्म होने से (तुम्हारा) शरीर निर्वाह भी नहीं सिद्ध होगा।।
One should perform the actions that are appropriate to ones varna or status and ashram or stage in life. In Vedic culture there are four varnas: brahmin the priestly class, kshatriya the royalty and warrior class, vaishya the farmers and businesss classes and sudra the workers and servants of the previous three classes. In Vedic culture there are also four ashrams: bramacharya which is celibate student life, grihasta which is married family life, vanaprastha which is semi-retired householder life and sannyasa which is complete renunciation of worldy life for meditation on God. Due to changing times and the unseemly mixture of different varnas people no longer adhere exclusively to the natural duties of their ashram as prescribed by the Vedas. This was even happening over 5000 years ago at the end Dvarpara yuga. In the Mahabharata we see King Yudhisthira noting that it was becoming exceedingly difficult to determine the varna of people due to the mixture of different classes. Therefore it is only by conduct and attributes that one can judge what class one belongs to and not simply by what varna one was born into and this conduct is determined by actions. Unless and until the impulse arises for one to surrender themselves in full service and devotion to the Supreme Lord Krishna then both varna and ashram apply in society. But after surrendering in devotion varnashram is no longer applicable or required.