American English Corrections

Looking for a Job All words except for prepositions and articles must be capitalized in titles. If a preposition or article appears at the beginning though, then it is capitalized.

I'm afraid of looking for a job, because it is a shadow of the fear which was placed in my heart six years ago. I'm afraid of the failures. I am always not confident （I don't know why） and whenever I failed fail at something, I am afraid of doing it again because I am afraid I will fail again. This afternoon, I was interviewed for a job as a primary teacher and I failed. I feel it's shamed. I can not close my eyes to sleep although it's very late, because I will think about the interviewing and the job. I feel like I will crash.

In my corrections, I tried to stick as closely to your original words as possible while fixing the grammar, but here is how I would write this entry so it sounds more natural and also so you have an example of how a native speaker might write this. :)

I'm afraid of looking for a job because of the blow I took to my confidence six years ago. The thought of failing at something really intimidates me, and in fact, whenever I fail at something, I usually do not want to try doing it again, because I think it will just end the same, in failure. I don't know why I look at it that way, but unfortunately I do. I really wish I had the confidence that my peers seem to have and the ability to go into an interview and either nail it on the first try or at least brush it off and stay confident in myself if I don't.

This afternoon, I was interviewed for a position as a primary school teacher and I didn't get the job. I feel really ashamed about it, and even though it is really late right now, I cannot get to sleep, because I keep thinking about how bad the interview went. I feel like my whole world is crashing down around me. Does anyone have any advice on how to remain confident in yourself in the face of defeat or any tips on how to perform better at interviews? Anything you can offer is greatly appreciated.

Looking for a job

I'm afraid of looking for a job, because of the shadow which made it left in my heart six years ago. (I wasn't sure of your meaning here, so I made a suggestion based on my interpretation) I'm afraid of the failures. I am always lack confidence（I don't know why) and when I failed, I am afraid to try again, because I am afraid fear failure. This afternoon, I was interviewed for a job as a primary school teacher and I failed. I feel it's ashamed. I can't not close my eyes to sleep although it's very late, because I will think about the interviewing and the job. I feel I will crash.

I think many people struggle with interviews. I think we are always our own worst critic. I wish you good luck with your future job searching.

Looking for a job

I'm afraid of looking for a job. (Because it is a shadow which made in my heart six years ago. - not sure of your exact meaning here, but I'll make some suggestions).

It is because of a traumatic experience I had six years ago./It is beacuse I was diagnosed with a problem with my heart 6 years ago. (- like a physical illness).

I'm afraid of the failures. I am not always not confident（I don't know why） and when I failed, I am afraid of trying it again because I am afraid I will fail again. This afternoon, I was interviewed for a job as a primary school teacher and I failed. I feel it's ashamed. I cannot close my eyes to sleep although it's very late because I will think about the interviewing and the job. I feel I will crash.

Well written entry.