It's hard to keep your chin up when the worries in your mind are weighing you down. Your brain has many important jobs to do. Like keeping you physically breathing, moving, talking, reasoning, and signals get crossed when it's path is blocked by too many thoughts. If you don't find a way to clear some of it out the signals it sends will hit a dead end. You won't get what you are reaching for if your fingers don't get the signal to grab.