Instead of focusing on individual issues, Internal Family Systems looks at the mind-body as a complete system running on a complex foundation of parts. Think of them as sub-personalities.
Each of your parts were either inherited or formed by some sort of event or trauma in your life. At the time, you may not have been equipped to cope. So, your system created a new “part.” One that was able to process and move on from the event in whatever way it could.
Sometimes, this manifests itself as a shyness or an underlying anxiety. Other times, it’s self-judgement, addiction, or something else you “wish was different.”
Internal Family Systems teaches us how to understand, coexist with, and (eventually) love each part. Then, as we get to know ourselves, we can get to know our Self.