What is the true nature of heaven according to the philosophy presented in Chapter 37, and how can one attain it?

According to the teachings in Chapter 37, heaven is not merely a place but a state of being. It is described as the Vairaj (the Cosmic Being) itself, the Virat (Cosmic) Self-form, which is free from all mental grief. To enter this heavenly state, one must first cross the 'nooses of death,' which the chapter identifies as adharma (unrighteousness), ignorance, anger, and hatred. This divine state is characterized by the absence of disease, worry, sorrow, and the fear of death, allowing the soul to move about with complete fearlessness.