At 2:37 a.m., the room is silent, but the mind is not. One conversation, one text, one unfinished thought replays on loop. For emotionally sensitive teens, this is all too familiar. Overthinking can feel like a storm inside the brain, a constant churn of what-ifs, should-haves, and worst-case scenarios. This is not just being dramatic or too emotional. There is real psychology and neuroscience behind why sensitive teens overthink and why it can feel impossible to switch off.