Let me alone - Let me BE alone or Leave me alone.

I am a little down, I didn't pass my driving exam/test ('test' is used if it's physically driving the car, if it's a written exam then 'exam' is fine).
People came to comfort me, they said it doesn't matter, they said I can pass it next time. I know they don't want me to be sad, but it's/that's easy to say and hard to do.
Next time! How many times, how many chances can I have? If I could only have one chance, how could I let me fail on this exam?
There's no next time in people's lives, we can not live twice, only one opportunity.
It reminded me of my experimental psychology exam, that was my first time failing an exam (or, 'that was the first time i failed an exam'), now I've turned the one failure into two.
I've never thought I was good at passing exams and I also never thought I may fail in exams.
How it could be? I don't want to be depressed. They are right, it is not a big deal. I know there's no setback that we couldn't overcome. But I couldn't stop my blue mood. I need time to treat myself.
Be alone, give up myself for hours to release all sadness, then I will stand up and face everything bravely.

Let me alone

I am a little down, I didn't pass my driving exam.

People came to comfort me, they said it doesn't matter, they said I can pass it next time. I know they don't want me to be sad, but it easy to say and hard to do. Next time! How many times, how many chances I can have? If I only had one chance, how could I fail this exam. There's no next time in people's lives, we can not live twice, there is only one opportunity. 

It reminded me of my experimental psychology exam, that was the first time I failed an exam, now I make the failure become two. I've never thought I am good at passing exams and I also never thought I may fail in exams. How it could be, I don't want to be depressed, they are right, it is not a big deal. I know there's no setback that we can't overcome. But I couldn't stop my blue mood. I need time to treat myself.

Stay alone, give up myself for hours to release all sadness, then I will stand up and face everything bravely.

Hello Ziska,

As others have said it is only an exam, nobody will die because you didn't pass. But if you did pass and you really weren't ready then someone might die. Many, many people don't pass first time (I didn't!), but it makes them more determined to do better next time around. Turn your mistakes into learning opportunities, this time you learned what you need to practise more to become a driver.

You can apply the same to everything, did they teach you that in psychology? There are just a few corrections to your  text most of them are quite easy to understand and they make the text more fluid.

Hope this helps

Bob