If it all starts to go wrong, talk to ATC... they are there for YOU.
Never forget, 121.5 is your friend.... and if you've never talked to D+D, find a quiet place you know well (I used Greenham Common once the USAF had left), orbit over it and call them for a training fix. If they are busy they'll tell you, but almost always they'll confirm your position and be glad of the call. It's good practice for them (although they don't need it...) and good experience for the pilot.
And if you are lost....er... uncertain of position... do let them know!