We all know someone who double-checks the door, replays conversations in their mind, or can’t relax until everything is just right. These behaviors might seem small, but they can reveal deeper obsessive tendencies  rooted in brain chemistry and neurological imbalances. Missed the Workshop?  Watch the Replay on Facebook  | YouTube The Gas and the Brake System of the Brain Your brain runs on balance—between “gas” and “brake.” The gas pedal  of the brain includes stimulants like