I am struggling to understand complex spiritual texts on my own. What is the key to comprehending their true meaning?

According to Chapter 20, understanding the deep, hidden truths of scriptures like the Upanishads is very difficult without the grace of a Guru. The text explains that the essence of the Vedas is found in the Upanishads, but this treasure is hard to grasp through personal effort alone. Even a scholar who tries to comprehend them by their own intellect will find the path difficult at every step. However, for someone who is devoted to a Guru's feet, the hidden meaning opens up automatically, and the obstruction of the intellect goes away. This science of Self-knowledge is best understood by following humble and detached individuals who have the Guru's grace.