Nervousness, worry, and anxiety each have distinct different causes and cures. Worry usually involves a specific situation and is generally temporary. Anxiety is a persistent, generalized state of unease or fear that may not have any specialized trigger. Nervousness, however, arises from overstimulation of the nerves. Let’s focus on this, because strengthening our nervous system can lead to permanent improvements in our well-being on all levels—body, mind, and soul.