A ripple in the Atlantic could create a tsunami in the Pacific.The Butterfly Effect suggests that a tiny movement somewhere in the world can trigger catastrophic consequences elsewhere on the globe. A white lie can grow into a World War. Accidentally killing your grandfather on a time-travelling trip might erase your entire existence. Does real life work like that? Well, psychologically, yes. We are all sometimes guilty of allowing negative thoughts to snowball into something uncontrollable. This isn't inevitable. Don't let a molehill turn into a mountain.