I believe that's what is referred to as the "pink cloud." IE, the period where all of the benefits of sobriety are at the forefront and you notice the difference in your life with great clarity.
As amazing as these benefits are, they do eventually become integrated into your "normal" and you notice them less. The regular problems that everybody faces are still there and your sobriety doesn't magically make them go away. BUT, you have to remember that having the benefits of sobriety integrated into your normal is a HUGE advantage over the "drunk normal." Your cognitive abilities are sharper, so the stresses of life can be handled with actual precision rather than just being ignored or dealt with the wrong way.
It's great that you're back and already at 11 days in. Next time you feel the urge, reach out, vent, play the tape forward.