Wow zorah, the way you describe how you feel is exactly how I felt for awhile! You put it into words perfectly.
It definitely gets better. However, even with some clean time there will be days and situations when it sorta floods back for a bit, then I remember I've weathered the storm, and have learned new skills in other areas, and use that confidence to move forwards.
I remind myself that life is an experience, and this sobriety thing is one more fascinating experience I am having, an adventure!
I liken it to being swimming and enjoying the experience then realizing I can't touch bottom. Panic! Now, I can stay in panic mode and most likely put myself into danger and crazy thinking, or I can remind myself that I am obviously a competant swimmer since I swam out that far and turn myself round and swim back with no problem...it's mindset and perspective as much as anything.
I'm glad you had fun in vegas, and grew some muscle as well!