[[Parts]] interact and relate with one another both in internal and external systems. In other words, they interact with parts within our system and with parts in our family, community, and societal systems. [[IFS]] was inspired by Family Systems therapy, but parts in our internal systems might be closer to a team than a family. Part of the goal of IFS is to help our internal system of parts better cooperate and allow [[Self]] to take the lead: [[The goal of IFS is to become Self-led]].