Can you explain the concept of 'Purushartha' (true human effort) as it is presented in Chapter 17, particularly in relation to overcoming worldly suffering?

As detailed in Chapter 17, 'Purushartha' signifies the true purpose and effort of human life, which is to discard the pleasant path of Preya and consciously honor the good path of Shreya. This true manhood is said to be born when a person becomes exhausted by the three unendurable torments of worldly existence, or 'Samsara.' According to the text, when this suffering prompts an individual to investigate how to stop the incessant wheel of existence, Purushartha arises. It is the struggle for the sake of Shreya, strengthening the intellect to resist obstacles and choose the means for one's true self-interest.