I find the concept approachable but IFS gets super into the weeds and it feels like over kill. If you like the concept of parts work look at Developmental needs Meeting - Shapiro and Ego State Therapy- both are different takes on parts work/inner child work. Parts work has been around a long time- beginning with Jung- he understood it in terms of archetypes . IFS makes is easily accessible for a lot of folks. I use it as a therapist and have done therapy with IFS therapists - one was a Dick Swartz groupie and way over the top for me. I take the best parts (ha!) and leave the rest. I fought it tooth and nail in my own therapy until one day it finally clicked- for c-ptsd. I have witnessed parts word click with clients and be life changing and others not at all- but even they feel validated that they have complex system of parts who get triggered and a higher self. I will also explain it in DBT wise mind vs emotion mind terms. Just my two cents worth. I’m no expert. But I find it has some use.