Question: What should a devotee do to express his devotion?
Swamiji: Bhagavan says to Arjuna, whatever you do, whatever you eat, whatever you offer as oblation to the sacred fire, whatever you give as a gift, whatever you do by way of penance, offer it all to Me. (Gita 9:27).
A Jnanayogi, renounces his assumed relation with the world, but a devotee does not believe or accept any reality other than God. Jnana Yogi, renounces objects and actions, whereas devotee offers objects and actions to God, that is, believing that the objects and actions are not his, rather believes them to be God's and God's manifestation. In other words, a devotee surrenders himself to God. By surrendering the Self (swayam) to God, all activities and happening whether worldly or of spiritual nature all are naturally and automatically surrendered to God.
Source: “Gita Madhurya“ by Swami Ramsukhdasji