My anxiety levels have pretty much disappeared when I stopped sweating via iontophoresis.
My anxious feelings about sweating - The "Damn it my hands are wet, and I have to shake your hand" type of feeling - made my sweating worse.
However, once I started the iontophoresis treatments and achieved 100% dry hands, my anxiety levels dropped because there is no physiological stressor (the sweating) to get me thinking about sweating. In other words, since my hands stopped sweating, I'm no longer thinking, worrying, being paranoid about the sweating. I guess it's sort of the "out of sight, out of mind" situation.
I hope that makes sense.