Waking up after drinking and feeling anxious, then being anxious about being anxious caused by drinking, then being anxious about stopping...a big ball of naff things really.
Like you said celtic, it's hard to even acknowledge that cycle till you've stepped out of it.
I always thought I was really sensitive to caffeine and it "gave me anxiety". But I'm realising it doesn't. I'm not going to become some kind of coffee addict but it definitely has less of an effect when I haven't got booze swilling around in me.