The Bhagavad Gita - VIII:14

Excerpts from God Talks with Arjuna: The Bhagavad Gita
by Paramahansa Yogananda

Self-Realization Depends on Effort

O Partha (Arjuna)! I am easily reached by that yogi who is single-hearted, who remembers Me daily, continually, his mind intensely focused only on Me.
—The Bhagavad Gita VIII:14

Constant and regular meditation
Joy and perpetual zeal

Success in self-realization depends on whole-souled effort. The true devotee knows the value of constant and regular meditation, by which his life becomes an uninterrupted prayer. Yoga should not be practiced mechanically or from an oppressive sense of duty, but with joy and perpetual zeal, thus causing each day's meditation to yield a deeper bliss than that of the previous day.