In the Shiva Purana, there comes a portion in which Lord Shiva had blessed some sincere and proficient, yet, temporarily distracted pandits with higher knowledge. What he taught is known as Upadesa Sara.

In this life, because we have so many desires, talents and resources, we can pursue various paths. However, the text is the ultimate gift of guidance as we understand the main thing that we should be focusing our thinking and energy on, and the things distracting us from it.