The momentous leap to second tier is supported by maturing our spiritual intelligence. Key SQ21 competencies and practices support SQ development, which act as a springboard toward later stages of adult development. This paper focuses on specific competencies such as complexity of inner thought, discernment between ego and higher self, welcoming different worldviews, experience of transcendent oneness, and keeping higher self in charge, as related to stages in Cook-Greuter’s Ego-development model. The focus will be on the capacities required to move to post-conventional stages of 4/5 (self-questioning) and 5 (self-actualizing), with special emphasis on the movement between 4/5 and 5.