Don't worry about it one lesson in.
Everything is new. You need about 80% of your available brain power just to take in what's involved in (learning to) handle the aircraft. There's a lot to learn. More, I think, than driving a car.
After several lessons, control will start to come a bit more naturally -like balance on a bicycle, you just suddenly start to 'get it' - and the job of including a good lookout as the major part of what should become a constant scan will become less burdensome.
[edit] At the early stages of learning, in fact any time your instructor is present, he/she will have quite a strong interest in keeping a good lookout for traffic. That's not to say "don't bother'; it's to say ''don't be paranoid about your inability to effectively do so."
Last edited by Tarq57; 26th April 2013 at 09:24.