Has anyone? how about every single great performer, HOF'er etc..has had performance anxiety, so pick any top athlete and you will find someone who overcame it. How anxiety effects you depends on how you channel it, all the best turn that anxiety into a performance boost.
We need pressure and anxiety to help us perform better...make crazy tough shots that under normal pressure in a relaxed environment you would have missed. You get that, I have to make this shot mentality, you can't look at the shot and try not to miss or think about missing, you have to shoot to make it.
Negative thinking is the problem, it's the root cause of anxiety. Never fear missing the shot, you have to look at every shot as your going to make it...if your trying not to miss, your concentrating more on missing it. If you miss, move on, it's over, everyone else has moved on.
I would say top performers have mastered these points
First and foremost, expect anxiety, it's normal, don't fight it, harness it, make it positive.
Breath, learn to breath right.
Change focus
Positive visualization
Change all thoughts to positive ones
And the big goof you make, get forgotten pretty fast, (unless you pull a Bill Buckner)..lol and if you do that, well then just have fun with it, go with it, don't hide, enjoy your goofs, even big ones!) I love big goofs!