How do we learn and grow from adversity? Think about the family that lost all their possessions in the hurricane, or the guy who went through rounds of chemotherapy, or the woman who lost her limbs. In the end, many of these people do say: I am a better person because of it. According to them, you can't find real happiness unless you experience such fights for your life.
Ah, happiness, that elusive state. Philosophers, theologians, psychologists, even economists, have long sought to define it, and since the 1990s, a whole branch of psychology—positive psychology—has been dedicated to pinning it down and propagating it.
Anxiety is a normal reaction to stressful situations. But in some cases, it becomes excessive and can cause sufferers to dread everyday situations.
This type of steady, all-over anxiety is called Generalized Anxiety Disorder.