Another pupil's letter , see how they develop self-awareness

A new letter has come and from it emanate true feelings , I am really touched when they consider me as their closest friend , they are trying to express themselves in the simplest way they can but see how this may be an instance of self-awareness among learners . They are thinking of themselves' dreams , achievements .
       Dear madam

Hello , I am so sad . My marks are not quite well , at physics , biology or even at maths . May be I don't work enough ! But the question that always comes into my head : Is  X better than me ? Why ? We have the same teachers , but why is he better than me ? Really , I am so angry and sometimes I hate myself because I am not up to my parents and teachers' expectations . I had better marks in the past and good averages , but this year , what is happening ?
I promise you that I will work more because I want to be an engineer so I should be working harder to make my parents proud of their daughter, you , too and even my friends . Please , give me some tips to help me and encourage me . I'm so sorry , I forgot to ask you about your health and family .Hope you're ok !
I am extremely angry and I feel something burning inside which urges me to keep working hard , to go on , it tells me that I am better than that . I made up my mind to be an engineer so I'll be so , I won't lose any possible opportunity to work harder , I'll burn the candle at both ends !
And now I must say good bye ! I hope I will write you another letter . Thanks for your attention .
                                                                                                           Yours faithfully