I thought I'd
never go solo - I seemed to be doing really well in the circuit at first, then my landings were awful, and when I got those sorted the rest of my circuit was terrible!
But the big day did arrve, pretty much without warning! What I do remember most is just after take off I looked at the altimeter, noticed it had just gone past 100' QFE and I thought 'well I've got to get this thing back home don't I?!'.
It was fine, you'll enjoy, don't worry about it too much, it is a massive compliment to your flying skills that they will let you go solo.
Best of luck!