"In the Bhagavad-gītā it is stated that one can serve the Lord by offering the result of one's own work; it does not matter what one does. Generally men may say that whatever they are doing is inspired by God, but that is not all. One should actually work on behalf of God as a servant of God. The Lord says in the Bhagavad-gītā (BG 9.27):
yat karoṣi yad aśnāsi
yaj juhoṣi dadāsi yat
yat tapasyasi kaunteya
tat kuruṣva mad-arpaṇam
Do whatever you like or whatever may be easier for you to do, eat whatever you may eat, sacrifice whatever you can sacrifice, give whatever you may give in charity, and do whatever you may undertake in penance, but everything must be done for Him only. If you do business or if you accept some employment, do so on behalf of the Lord. Whatever you may eat, you may offer the same to the Lord and be assured that He will return the food after eating it Himself. He is the complete whole, and therefore whatever He may eat as offered by the devotee is accepted because of the devotee's love, but again it is returned as prasāda for the devotee so that he can be happy by eating. In other words, be a servant of God and live peacefully in that consciousness, ultimately returning home, back to Godhead."