Sometimes, feeling detached due to anxiety is quite distressing, I've been to that well more than I'd like.
While the article seems more geared to DPD than anxiety itself, they're so closely linked it's like a what came first, the chicken or the egg kind of thing. I hope this helps anyone suffering from this horrible symptom.
http://depersonalizationrecovery.com/articles/depersonalization-cure-tip-2-anxiety/