What does Chapter 10 describe as the easiest and best spiritual practice (Sadhana) for a person to undertake?

Chapter 10 presents a remarkably simple yet profound spiritual practice, calling it the "best of all means (Sadhana)." This practice is to "always remember with a heart full of love" the Guru, who is eternally devoted to the welfare of all beings. According to the text, this method is superior because it costs nothing and requires little effort, yet it yields immense results. The chapter states that through this mere remembrance, the very "knot of birth and death is untied," and all good things come easily to the devotee, bypassing the need for complex logical or intellectual struggles.