Failed driving test again, and now feeling utterly stupid and worthless! Suggestions please?

Some examiners are just arrogant horrid people who only chose that job cos they couldn't be a prison guard. I once had a test where on the road back to the test centre the examiner asked if I had considered taking the P Plus and what where my plans for when I ped my test. As I felt it had been a good test I was quite pleased until 2 mins later I pulled up & he told me I'd failed on something really stupid at the beginning of the test. I could've ripped his head off! The only advice I can give you is to try and keep calm. I'm a very confident person usually, however when I was learning to drive I would be fine until you put an examiner next to me and I would start shaking & panicking. It felt like the more tests I failed (usually on silly things I hadn't realised I'd done!) the worse my confidence got. (I honestly believe whether you p or not often depends on the mood of the examiner!). I did manage to p on my 7th (yes, 7th!) go, and I really do know what it's like. Just try to keep calm, and know that it will happen, you just can't give up. I kept throwing in the towel & my confidence was shot to hell. Please try to not let it get to you (I know it's easier said thamn done!) but failing with so few minors suggests you are a good driver, and that the examiner should've used some common sense when deciding the outcome (a skill most lack, unfortunately!) so keep at it, & don't let then put you off! I know I've rambled, but I hope some of this made sense! Good luck, I'm sure you'll be fine!