Arjun, perform all deeds passionately--- with all love,---- with full interest----, investing sufficient energy ---, selfishly---to reach your goal of life-----which is very important----not to be sacrificed for anything----- and as per need and context, ---but not as workoholic, ---nor bullworker, --but intelligently, judiciously, in right dose -----sparing enough time for meditation and spiritual sathsang etc