Don't get discouraged! Difficult times are a part of life, but there is always grace on the other side if you commit to sticking through it. In fact, sometimes you can find blessings in your current situation if you just take a closer look. One thing that has helped me personally is to journal every day about the following two things: 1.) a list of people and things that I am grateful for in that moment, and 2.)a list of the victories of that day. No matter how small, like "On this cold day I am grateful to have shelter", or "Today I wrote a notebook entry on italki."  Do this every day for a week and you will see a difference. These things will open your eyes to the blessings that are right in front of you. That can help you relax, and who knows, it could help you move forward and find a job if you are more relaxed. I wish you luck!! All the best. 

Diary Entry for December 13rd

Today I had lunch with my best friend. However, considering the scarcity of money we decided to have lunch in the school dining room.
She is a charming and considerate girl. I have known her for five years. Recently Lately she has been busy because she has been practicing in a Cultural Media Co.Ltd. So I haven't seen her for a long time.
She told me how boring to do a lot of trifles day and day. How dreadful the morning rush is. She felt tired and couldn't show her value in this job. I just had rare social experiences. So I didn't know how to suggest her. But I thought to be an adult，she could be responsible for her choice. As a friend，what I should do is give her support！

Dahlia, great job! In the 5th sentence I suggested changing "recently she is busy because she has been..." to "...she has been busy because she has been..." to keep the tenses consistent. I'm curious as to what you mean by you having "rare social experiences." Elaborating on that could help readers understand the context a little better, but I think all the points you are trying to make can be understood. Congratulations!