Worrying can be helpful when it spurs you to take action and solve a problem. But if you’re preoccupied with “what ifs” and worst-case scenarios, worry becomes a problem. Unrelenting doubts and fears can be paralyzing. They can sap your emotional energy, send your anxiety levels soaring, and interfere with your daily life. But chronic worrying is a mental habit that can be broken. You can train your brain to stay calm and look at life from a more positive perspective.