"Let go, Have fun"
One of the toughest things to do in table tennis (or any skill sport) is to do exactly what the heading says - "Let go, Have fun." In a split-second skill sport like table tennis, you can't consciously control each shot; it's all instinctive. Yet that's exactly what one does when they can't relax. And so all their instincts go out the window, and suddenly they can't make a shot. Afterwards, they wonder why.
USA Women's Champion Arial Hsing, just 15 years old, exemplifies the ability to "Let go, Have fun." It is that ability (along with huge amounts of training, great coaching, experience, etc. - details!) that make her a champion. And how did she learn to do this? During her up-and-coming years, guess what she always wrote on her arm before a tournament? Here she is, about four years ago, at age 11. Yes, that's "Let go, Have fun!" written on her arm. (I have a larger version on my computer so I can zoom in and verify the words, including the exclamation mark at the end.)
Players who learn to do this find themselves basically spectators when they play. They think tactically, but otherwise they just watch the ball and let their bodies play the game while they observe. They just have fun watching as they pull off shot after shot!
Why not say "Let go, have fun" to yourself before every match from now on? Imagine how much better everyone would play. Of course, now that the secret's out, your opponent's going to do the same thing, and soon we'll have matches where the two players just sit around and watch while their bodies go play.