Anxiety Support Group
Anxiety is a physical condition marked by intense and persistent feelings of distress, fear, angst or dread. General anxiety caused by routine day-to-day stresses usually passes quickly and is experienced by almost everyone at one time or another. However, such feelings that linger over time and are very difficult to cope with, and which lack a clear cause, may indicate...
In contrast to what vonni said, people with anxiety or panic disorder don't necessarily experience it for their whole lives, at least not to the level of a disorder. People might be more susceptible to it and have a threshold for it. So, something can trigger it and we find out we have the disorder (like me).
On the other hand, more to what vonni was saying, many people just go through periods in life where they experience higher levels of anxiety/panic, but don't necessarily have a diagnosable disorder. Do you have anything else stressful going on in your life? Any major changes?
Bottom line, since it's lasted this long, I'd see a doctor. You can learn to cope with anxiety and stress without having to make a life change, like finding another job.