How did this happen.....

As most of you know me , I wake up @ 5AM naturally and take a .5mg xanax to get me back to sleep and help me when i wake up at 7 without all the anxiety. This has been going on for over 2 months. In the last 2 days that has all stopped. I went from up to 3mg xanax a day to about 1-1.5. WOW ....just all of a sudden.. maybe I am getting better.  Joe