I believe we all need at least three people in our lives, also known as plus, minus, and equal. The plus is a mentor who can help you and empower you. The minus is someone who you can help. And the equal is someone who is sharing the journey with you. In many ways we are always all three of those for each and everyone we come across. Teacher (because we are also teaching our mentors how they can connect with us). Student (we can always learn from someone who is lost). Friend (essentially we are all on the same path, just different parts of it. All rivers eventually flow into the great ocean).
Without a deep understanding and awareness of this trinity (+plus, -minus, =equal), we will die.