Have you tried things like wearing a rubber band around your wrist, and when you feel a panic attack coming on you can use it to slap your wrist and kind of derail your current train of thought? Like the parent poster, I often would have panic attacks while worrying about whether or not I was about to have a panic attack. Like, if I could make it to to wherever I was trying to go I knew I'd be fine, but getting there was hard because my mind would race while driving there and I'd have an anxiety attack usually. My dad told me to try the rubber band thing and it actually kind of worked. Sort of a placebo effect maybe, but anything is good if it gets you past that moment. I also got into the habit of telling myself that I was going to be alright. I knew panic attacks only lasted a few minutes and I knew I always got through them, so I had to tell myself that I'd get through the current one and be fine in a few minutes - even though it'd feel like hours. It really took me about a full year of giving it 100% effort to get over my anxiety, to a point where I could at least sense an attack coming on and I could kind of prepare myself to calm down. A lot of mine was proper breathing. It sounds really weird, but I think I realized that I would basically slow my breathing down to almost not breathing when I got nervous, and that would make me light headed or something which would trigger a panic attack.
Some other things that helped me a lot were to just tell my friends up front that I felt like I was having a panic attack. You'd be surprised how little amount of other people will judge you for saying it. Most people offer up advice and feel sympathetic, so telling them usually helped me calm down. I also went out and bought a bicycle and a basketball hoop. When I was feeling like I might have an anxiety attack, I'd just go outside and shoot a few hoops (I suck at sports, it was just something to do), or I'd go ride my bike around.
I did try herbs. I never took prescriptions. I don't think herbs every actually did anything, but sometimes it felt good to just be "taking action" and they had a placebo effect in that sense, I guess. That's just me, though.
Also, I take stuff really personal usually, and I'd bottle stuff up. I used to get very frustrated when something I'd been programming on for awhile hits a snag or I can't figure out how to do something, despite weeks of Googling and stuff. It may sound lame, but sometimes it felt really good to just let it all out. Whether it was crying or yelling or whatever. I had one time driving home from work, having a panic attack, that I couldn't handle it and I just started crying for some reason. It felt great after. I had other times where I'd just yell in my car and that'd be enough to kind of derail an anxiety attack.
I don't know man, I don't think there's really a 1 size fits all solution to anxiety. It's just finding something that you can use as a tool to help yourself get through that 1 moment in time. Don't look at solving the whole thing, just look at solving each panic attack, and then use those tools to get you through 1 day, 1 week, 1 month, etc.