So true...we've all got a situation or two that increases anxiety.
Of course, we all know that the more relaxed you are, the less likely you are to bauble and make a mistake, so it doesn't do any good to fret about it. The only thing that seems to work well is to get as much protective gear on as possible, and keep re-conquering the section/situation that gave you the injury. Or a similar section that's maybe not as extreme. I pounded my face on my front fender by doing a goofy corner during a sand ride, because I used hardpack technique on a sand course. I cursed the sand for a year, then finally made a commitment to learn how to ride in the loose stuff. I spent a couple of hours observing good riders attacking the same corner I ate it in, and just duplicated their posture and momentum.