Occurance of an Event

The tendency of an event to occur varies inversely with one's preparation for it.
- David Searles

This quote aptly summarizes that the more we prepare, the more dull/listless/sober the final event will turn out to be. This is specially relevant and pertinent to any performance.

Take a student, if he/she prepares well for an exam, the exam turns out to be very ordinary and easy. A musician or athelete if they practice well can easily give out their best naturally. In other words, the final performance should be a replica or repitition of something done before and there should not be any significant variation from a past rehearsal performance in order to sound both consistent and confident.

However a word of caution here. There are some folks who do not want any ambiguity or uncertainty for the " D-Day " event and want to pre-plan everything. In many cases this will not be possible and its always nice to have some unknown parameters to give us that adrenaline rush and subtle variations to give some variety.