I believe the power of practicing. The more you do, the better you get. But something unexpected almost always happens on a real stage — as well as our real life.
Embrace and enjoy the unexpected. Have fun being in the situation. Focus on what you can do at this exact moment. Believe what you did during your hard practice.
What you do in the unexpected situation is also the outcome of your continuous practice. If you are fully immersed in your work, it can become your best work.