As you know, there are many ups and downs in a tennis match. We will refer to
these as Peaks and Valleys. The Peaks are certainly the most fun. However,
they are usually short-lived. The Valleys are the most unpleasant and can
last a seemingly long time. One of the keys to success in a match is to
maintain an "Equilibrium" - an average level of play somewhere between your
"Peak & Valley" performances.
If you approach a match and expect to play
great and win or in contrast you expect to play poorly and lose - you are
setting yourself up for failure. Assuming that you can produce an average
performance all the time will benefit you greatly. It is your average play
that will win or lose a match. Ride the Peaks as long as you can. When
falling off a Peak, try to go back to the equilibrium. When you are in a
Valley - don't force yourself into making perfect plays. Try to get your game
to equilibrium.
Remember, there are many ups and downs in a match. Your job
is to stay in the match for the long haul. Always fall back on your
equilibrium or average play.