Beedebea, congratulations on your progress so far! I know what you are describing.. I've felt it too. I think it comes from finally realizing we are on the right track. It's an epiphany!
I understand the advice to be wary and don't get complacent or let your guard down -- there will be low points and temptation-- but I think it's also a really great sign! It means that instead of feeling sad and sorry for yourself or feeling deprived, you are excited about embracing sobriety, and that's a huge step.
Keep reading and posting and keep up the good work. I'm right along with you!