While ISFJs may seem calm and collected on the outside, there’s a lot happening under the hood. They take in more sensory detail than you’d expect, notice every tiny shift in behavior, and have an inner critic that could probably bench press a car. And when life doesn’t go the way they think it “should”? That stew starts to boil over. That's when the ISFJ dark side can erupt. Find out more in today's article!