The very thing that you dread and fear can keep you keep thinking about it. A lot, in fact. And that constant thinking can give way to obsessive anxiety. And then the obsessive anxiety and fear begin to take control of your days ... and causing sleepless nights. Gradually, the lack of sleep can spiral you into depression, which easily saps your energy. Next thing you know you have lost your zest for your job, your family life, your romantic life ... everyday living will seem colorless.