The concept of "7 Habits of a Sincere Devotee" is likely inspired by the popular self-help book "The 7 Habits of Highly Effective People." While there isn't one universally codified list of "seven habits" in devotional traditions, the essence is often derived from scriptural teachings and the lives of great saints.
A book titled "7 Habits of a Sincere Devotee" by A.R.K. Sarma published by Sri Sarada Book House (associated with Ramakrishna Math) is available, suggesting a specific compilation based on the teachings of Sri Ramakrishna, Sri Sarada Devi, and Swami Vivekananda.
Drawing from various spiritual traditions and common devotional practices, here's a general outline of what could constitute the "7 Habits of a Sincere Devotee":
These habits are interconnected and reinforce each other. The path of devotion is a journey of transformation, and consistently practicing these habits helps a devotee to grow closer to the Divine and experience inner peace and fulfillment.