What does Chapter 10 identify as the simplest and most effective spiritual practice (Sadhana) for attaining liberation?

As explained in Chapter 10, the best and most accessible of all spiritual practices (Sadhana) is to simply remember the Guru with a heart full of love. This method is praised for costing nothing and requiring little effort, yet it yields immense results. The chapter states that through the "mere remembrance" of the Guru, the difficult "knot of birth and death is untied." This path is presented as a direct means to liberation that bypasses the need for other struggles, ensuring that great fruit is obtained and everything comes easily into the devotee's hands.