How did you feel the day before your driving test?

I've got mine tomorrow and just had my last lesson. At the end of it my instructor told me if that had been my test I would have failed miserably, which now has made me even more nervous. She said I'm panicking too much and making too many mistakes (today I cut 2 cars up on a roundabout, didn't see some traffic lights were on red and kept going, stalled the car in the middle of the junction plus minor errors like forgetting signals etc). She said she knows I can drive but if I let my nerves get to me tomorrow like they have today, I've basically failed already. But I can't help but stress. How did you deal with it?