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...

I know how scary it can be thinking that one misstep will take you back to the beginning, but it won't. Hang in there
I agree with Hypergal. I'm an introvert, too, and obviously the depression and anxiety don't help matters. If I have a bunch of social interactions I often find myself exhausted, nervous, wired and unhappy for a while afterwards, even if I had a great time going out.
It helps me to just to come home, shut out the world, and do some yoga, journaling, or take a long hot bubble bath. Before long I start to feel more centered and calm.