Internal Family Systems (IFS) therapy works from the premise that the mind is made up of distinct internal "parts" — some protective, some wounded, some managing day-to-day functioning — and that behaviors which look purely negative from the outside (a harsh inner critic, emotional distance, chronic control) are often a protective part's attempt to shield a more vulnerable, wounded part from further harm. Rather than trying to eliminate the harsh or distant behavior directly, IFS works to understand what that behavior is protecting.
This reframe matters clinically because it replaces a battle against a symptom (suppress the inner critic, stop being distant) with a more productive question (what is this part afraid will happen if it stops doing this) — which tends to surface the actual underlying wound the protective behavior was organized around in the first place.