If you're overthinking it, take a step back and ask yourself why you wanted to fly to begin with. It was probably to fly places, or to enjoy the views or just to enjoy flying. None of these require pinpoint navigation or superb flying skills.
Ask if you can have a flight where you just fly for fun. Or, better still, fly somewhere (and back!) for lunch. Forget about trying to achieve specific standards and have some fun to remind yourself what it is all about. If the school isn't willing to help you do that, find another school.
Regardless, it may be nice to have a lesson with another instructor - who may be able to shed some light from a different angle.
I don't know where you are but you can also ask someone if you can come up with them for a flight - it can be really useful to see someone else fly and pick up all the things that you already know but struggle to put together. There's a 'Spare seats available/desired' sticky at the top of this page (and similar on other forums as well) - lots of people will be happy to take you up.
If you really feel that you are close to giving up - take a step back and do something you enjoy to rekindle that positive feeling
B.