In an episode of Big Bang entitled “Itchy Brain Simulation,” Leonard thinks Sheldon is overreacting over an unreturned DVD. Sheldon feels Leonard doesn’t understand that, for him, unresolved issues are “like an itch in my brain that I can’t scratch.” So Sheldon asks Leonard to wear an itchy sweater until the overdue DVD is taken care of. The gag is that Leonard is allergic and breaks out in a violent rash, making him short-tempered, irritable, and prone to outbursts. In my estimation, this proves Sheldon’s point perfectly.
This, in a nutshell, is what I wish I could have done in my marriage.