Umm...what they said!
If it was a disorder of sorts, a good way of knowing is if you are 'clutchy' or develop anxiety if you can't find/ruin a favorite item, or if you find that your heart races and you become slightly confused in terms of what to do in semi-terse situations (think stage fright). Also, another hint could be if you can't go for a reasonable stretch of time without a break, say a 6 day work week with proper breaks (unless it's above something like a standard workload or average full-time hours).
Of course, none of these on their own are enough to determine a disorder, and a personal diagnosis about anxiety disorders (or any for that matter) rarely should be taken to heart without conferring with a medical professional or expert in the field of concern unless you have valid reasonings of incompetence about the professional over their field of expertise, and after review are able to link any 'misinformation' (they try hard not to say anything until they're certain) to some sort of proof (like a reputable study, Chucky's done this with concerns of Asperger's, and I have seen signs supporting this as I am an Aspie myself). Of course, this is what second opinions in the medical community are for. Mind you I'm not a proffessional myself, but I have been through the system as a patient, and have experienced these signs to some agree...you can imagine how bummed I am that my laptop isn't working. :c