Welcome Viking and congrats on your decision!
I was really scared when I first got sober, too. I was afraid that I'd fail at sobriety, but equally afraid that I just might succeed. I just knew I couldn't continue to relive the same miserable day over and over.
I took it one day (hour/minute) at a time and with each day I felt a little stronger and less afraid. Waking up without a hangover ain't bad either! It really does get better.......