Based on Chapter 37, what is the spiritual definition of 'heaven' and how is it attained?

Chapter 37 presents a non-traditional view of heaven. It is not a physical realm but a state of being, identified as the Vairaj (the Cosmic Being) or the Virat (Cosmic) Self-form. This divine heavenly state is characterized by the complete absence of mental grief, disease, worry, sorrow, hunger, thirst, and the fear of old age or death. It is a condition where the soul moves about fearlessly, free from the duality of 'do's and don'ts'. According to the teachings in Chapter 37, this state is not attained through rituals but by overcoming the 'nooses of death'—which are identified as unrighteousness (Adharma), ignorance, anger, and hatred. By crossing these internal obstacles, one enters this divine state.