The most helpful book I've ever read on this subject is Hope and Help for Your Nerves
by Dr. Claire Weekes. It's not new, and it doesn't use the most current DSM-IV terminology, but it's easy to read and simple to understand. Basically it's sort of a "self-talk" as mentioned by a previous poster in reference to a different program. Her approach is to break the panic attack cycle by training yourself not to freak out if you feel the symptoms starting.
For me, talk therapy and/or pharmaceuticals weren't the ultimate answer for day to day use because for me, I think my brain was wired that way, and my mom had the same problem. Everyone is different, even in anxiety disorders.
It's always a good idea to go easy on the caffeine, don't let yourself get prone to crashing blood sugar because for me hypoglycemia alone could cause my "trigger" to get a lot more sensitive. Some OTC decongestants can increase susceptibility, too.
As someone else mentioned, plan your time so you have less reason to run around like a crazyperson, thinking omg no gas! OMG! I'm going to be late! I found it helpful to get to work a bit early to calm and focus myself.
If it helps at all to hear this, I'll throw this out, most nurses with anxiety issues are also high performers and dot all their "i's" and cross all our "t's". Sure our motive may be sort of OCD and fear of getting fired but it's true just the same!