anxiety
"I've had severe GAD and social phobia with light panic attacks on a daily basis for several years so much so that I could not function at work (I work in the mortgage industry - sales related) and the anxiety would KILL the deal because client's would interpret the anxiety as not being confident in the product.  

Generally also had trouble looking people in the eye, not being able to think straight, stuttering, difficulty making decisions. 

Psych put me on Xanax, but too sedating and a bit harsh & didn't last very long, was put on Celexa (but this just made me not care about anything and had no emotions, caused mania etc.  Clonazepam didn't quite do it.. Started Valium 3 weeks ago a and wow all previous symptoms gone and feel normal!"