I always carry 0.5ml with me at work, in case of a panic attack. Rather than take it every day, I have it as a kind of reassurance. If I flip out, it's there to calm me down.
I had some today, as I was particularly stressed out. I ended up fucking up some work, and pissing off some people. But at least I was relaxed about it. :D
I find the best way to deal with anxiety is just not to even entertain the idea that your anxious. As Treacle wisely pointed out to me a while back, anxiety is all in your head it can't actually hurt you or cause you any physical harm. So based on that I decided that my anxiety could fuck off and instead of worrying about panic attacks etc I just decided what will be will be. If I do happen to have a panic attack while out and about, so what? Not going to actually cause my any REAL harm is it? S'all in the head, nothing physical will actually happen. I won't actually die or come to any harm.
Treacle you should maybe take your own advice as it worked for me a treat. I had a random panic attack out of the blue a couple weeks before I was due to go to Asia / OZ and I was shitting it that it was going to affect me while I was away and fuck up my trip. Went to the docs and got beta blockers etc but didn't bother with them in the end just soldiered on soon realised anxiety can only fuck you up if you let it. Felt a bit anxious a few times on the trip but soon controlled it and was a-OK. After I'd been away for a month I wasn't arsed about it anyway, now whenever I feel anxious I just decide not to bother thinking about it and it quickly subsides. Don't really have any problems with it at the moment.
For anxiety I say no to GBL, no to beta blockers, no benzos but yes to positive thinking.