Krishnamurti's teachings are based on scriptures such as Upanishads and Gita. He was averse to the notion of having a Guru (or teacher) because the teachers he had seen in his time were very steeped in orthodoxy, despite their learning. He was also against quoting verses from scriptures because he wanted to break away from the traditional teacher-student model. His teachings are appealing to many people who do not ha…
>"There are supplementary texts that also discuss the approaches to attain it." The more interesting question is, why are you trying to attain it? What is it that makes people seek enlightenment?
The entirety of a human's life is based on the notion I-am-the-body-and-the-mind. If one were to discover one's true nature and shed these limitations, eternal happiness and peace follow. The path to learning this is fraught with difficulties. The biggest obstacle is to learn things differently from what we already know. A cursory reading of books isn't sufficient. This is where the Upanishads and Gita stand out in comparison to other texts on philosophy. Not only do they describe in great detail the true nature of the Self, but also prescribe many practices on reaching the goal.
There's every reason to pursue Self-realization or enlightenment as the only worthy goal of life. Such a goal never comes in one's way of being employed, raising a family etc.