The nine types aren’t given their numbers at random. They follow the idea that three core aspects of what makes us human sort the nine types into three groups: Head Types, Heart Types, and Body Types.
Each group (often also called triads) is driven by their center of intelligence and has a core emotion. Just as you carry a little bit of each type in you, you are shaped by all three of these aspects, but the group your type belongs to plays a greater role in your life. You can learn about it here.
Ones can lead through integrity and reason, but also be challenged by perfectionism and resentment.
Twos can shine with generosity and intuiting people’s needs, but also struggle with defending their own boundaries and people-pleasing.
Threes can be inspiring examples of excellence and authenticity, but also blindly pursue success and status.
Fours can open people’s eyes to the beauty of the world and shine with authenticity, but also be held back by moodiness and self-absorption.
Fives can demonstrate visionary intellect and inventiveness or become increasingly socially withdrawn and secretive.
Sixes can exemplify courage and commitment, but also struggle with anxiety and rebelliousness.
Sevens can become uplifting visionaries and agents for positive change or struggle with impulsiveness and impatience.