Here's the deal - controlling anxiety isn't what you need to do.
In fact, you can't control anxiety.
Think about this for a minute before you continue on your search; if you could control anxiety, wouldn't you have done so already? I know that, if I could control my panic, I'd never have an anxiety attack.
I wouldn't have taken those medications I had to stop and I wouldn't have sat in therapist's offices listening to them repeat whatever statement I last uttered.
Hopefully I've led you to the conclusion that controlling anxiety isn't quite possible; to contradict myself, I'm going to now assert you can eliminate your anxiety with a simple thought.
The reason controlling anxiety is such an issue with me is that it lends the connotation that those who suffer from anxiety are choosing it.
This is of course false.
What is true is that it can be cured and you can do it with your thoughts, but not happy or calm thoughts like you're told to create during meditation.
Instead, controlling anxiety by eliminating is done by breaking the cycle of anxiety you may or may not be aware exists.
I'm not the only one who believes this either; expert Joe Barry and the countless people he has helped are just one example, although arguably the most premiere and popular.
A word about credibility: supplements, powders, pills and alike are not effective; how's that for credibility? Before you set yourself back, by making controlling anxiety your goal, consult the experts who focus on cognitive methods and learn the single thought that breaks this cycle immediately and permanently; it is a one step process that anyone can do.
Since it isn't my program, I cannot teach it to you, only Barry can do that.
If you're interested however, you can easily learn more.