Bad habits can ruin your life. Whether you're gorging on Haagen-Dazs or dressing up like a Power Ranger and flaying hobos every night, you know on some level that things have to change, or disaster will follow. But no matter how badly you want your life to be different, things just keep plowing on the way they are. Why?
Because your brain has a long list of diabolical mechanisms intended to keep your habits exactly as they are.