Yes. >>Correct!
I have given advice to a teenage girl whom I know well.
>>Correct!
We have kept in touch for a long time, and her age is 19.
>>We have kept in touch for a long time, and she is 19.
Recently, She asked me to give advice.
>>Recently, she asked me for some advice.
She was in demanding time because of studying and she struggled to enter the university.
>>She was in a demanding time because of her studies and struggles to enter a university.
Especailly, an contention that entering a well-known university is the best success is really dominant in our society, and this atmosphere makes her exhausted.
>>Especially, contentment from entering a well-known university is a powerful indication of one's success in our society, and this makes her exhausted.
And she has to write an colleage cover letter for hongik university.
>>She also has to write a cover letter to Hongik University.
And I know well about the way to write that type of colleage cover letter because I have prepared it before.
>>I know well about writing cover letters for college because I have done it before.
To lessen her stress, first I gave consolation to her and helped her to write colleage cover letter well.
>>To lessen her stress, first, I consoled her and then helped her in writing her college cover letter.
I want to say cheer up to not only korean students but also students of all around the world.
>>I want to cheer up not only Korean students, but also students from all around the world.
They always struggle to do well, enduring demanding time.
>>They always struggle to do well while enduring the demands of life.
These are difficult things, and sometimes this challenging environment makes students feel blue.
>>They are difficult, and sometimes this challenging environment makes students feel blue.
But after tough period, all of students could be happy.
>>But after a tough period, all of the students could finally be happy.