You say you've only spent 1 hour in the circuit. It is certainly not normal to feel confident after just 1 hour in the circuit - most people I've spoken to seem take a very minimum of about 5, and that really is a minimum! (Of course, there'll always be one or two who do it faster than everyone else...)
It took me 8 hours in the circuit before I went solo, and I only started to feel comfortable during the last two or three. The first lesson of circuits was a nightmare - I was all over the place, and couldn't keep up with the aeroplane. I thought I'd never be able to land it...