The secret of karma yoga which is to perform actions without any fruitive desires is taught by Lord Krishna in the Bhagavad-Gita.
Swami VivekanandaI am persuaded that a leader is not made in one life. He has to be born for it. For the difficulty is not in organisation and making plans; the test, the real test, of the leader, lies in holding widely different people together along the line of their common sympathies. And this can only be done unconsciously, never by trying.
Swami VivekanandaThe greatest sin is to think that you are weak. No one is greater: realize that you are Brahman. Nothing has power except what you give it.
Swami VivekanandaTake courage and work on. Patience and steady work - this is the only way. Go on; remember - patience and purity and courage and steady work. . . . So long as you are pure, and true to your principles, you will never fail.
Swami Vivekananda