The secret of karma yoga which is to perform actions without any fruitive desires is taught by Lord Krishna in the Bhagavad-Gita.
Swami VivekanandaDoing is very good, but that comes from thinking. Little manifestations of energy through the muscles are called work. But where there is no thought, there will be no work. Fill the brain, therefore, with high thoughts, highest ideals, place them day and night before you, and out of that will come great work.
Swami Vivekananda