Intuition comes very close to clairvoyance; it appears to be the extrasensory perception of reality.
If one must fight or create, it is necessary that this be preceded by the broadest possible knowledge.
No matter what - rehearsed, under-rehearsed, over-rehearsed, doubts about rehearsing - the first gig is always the first gig, and you put on your little praying hat, batten down the hatch, and do what you do.

