I had my first recital last weekend, the first recital in three decades.
I have been haunted all these years by the memories from my teen years. I always s****ed my performances up, more or less. I remember them as horrible, humiliating moments. I started to shake, I broke out in cold sweat, the notes and the keys suddenly were like I had never seen them before (no, I did not memorize, I wonder why it is a shame to sight read?) and of course I made strange mistakes, I played uneven, forgot the music ... yes, ALL THAT. And afterwards I just tumbled off stage again, never hearing the applause.
So it was important to me to do it better this time, to get rid of that old ghost.
After all, I am 30 years older now. Believe it or not, but it can be of good help ...

I am not afraid of the audience. They are just people like me.
I have done a lot of mental preparation, in my mind I have entered the stage and enjoyed the playing and bowed to the cheering audience ... well, at least I tried. But not even in my imagination I could get rid of the beating heart, the cold hands, the tension and the sense of facing an execution squad ...
But I have also noticed a few things. Most of all, the first entrance is the worst. After that, a lot of tension goes away and I can play in a more relaxed way, I know that. So, this time we had a clever start: we started with simple blues improvisation, all of us, shifting our positions at the piano. Moving around, playing something very easy in a group, that is very relaxing. And then we stayed on stage. We had of course familiarized ourselves real good with the venue and the piano in beforehand.
Then I played 4 hands with my teacher. Being two persons at the piano is SO much more safer. It went very well! I made mistakes and she made mistakes and as we never made them simultaneously, nobody noticed. Perfect ending.
And later on I played my solo piece and it was a great experience. I felt happy to give this beautiful music to the audience. (Yes, I made a few mistakes but so what, even the big stars do that all the time.) I was just tense enough to be really concentrated, but I could do whatever I liked at the piano, my hands obeyed me. And afterward the audience cheered and gave me a heart-warming applause and I just stood there, smiling and thinking "I deserved that!"
So, the curse was broken. Which means it is possible, because I was a real BAD case of stage fright before.
One thing I read some years ago in "Fundamentals of Piano Practice" (Chung) was that you should NOT prepare yourself by practicing perfection "1000 times in a row" before a performance. I mean, of course you should be prepared very well, but right before your performance, or the day before, you should instead practice very lightly, and VERY SLOWLY. And if you know your piece, you should NOT play it all through either. Just slowly and gently move your hands in selected sections of your piece. Smile to yourself! Yes, smile, and enjoy the music. You know already you can master this piece - now it is time to "plant" a sense of relaxation and harmony in yourself instead of making that last, and highly unnecessary run-through which will just stir you up!
Also practice stops a lot. Get used to start and stop playing in the most unusual spots in the piece. If you stumble, you will just quickly pick it all up again and keep on playing, and most people in the audience will probably never even notice something went wrong. DO NOT practice run-throughs, from beginning to end, too many times! These occasions should, actually, be exceptions.
This time I followed that advice and yes, it worked.
I have watched so many famous pianists by now, and what I admire the most is not that they don't make mistakes, because they all do, but how easy they get back on track when they make mistakes or get memory slips. And always with that calm poker face ...