Tough, but please be brave!

It's tough, but please be brave!

Recently, I've found that I could barely focus on my study.

Recently, I've found that I can barely focus on my studies.

Feeling all the things were at mess and i couldn`t find an appropriate way to cope with.

I felt that everything was a mess, yet I couldn't find an appropriate way to cope. (or: cope with them)

After that day when I went out of liberary,I found a quiet place to calm myself down and thought about what I really should do.

That day, after leaving the library, I found a quiet place to calm myself down and thought about what I really should do.

Luckily, I figured out that no matter what kind of life I will lead in the future,it's all my choices.

Luckily, I figured out that no matter what kind of life I will lead in the future, it's all up to me.

And at least,the most essential thing is that I should entirely settle down.

At least I know that the most essential thing to do is to settle down entirely. 

I know it will be tough at first,but as long as I am brave enough to meet the challenge that may appear on the way, gradually, I will be amazed at the difficulty that I`ve gotten over.

I know it will be tough at first, but as long as I am brave enough to meet the challenges that may appear on the way, gradually, I will be amazed at the difficulties that I've overcome.

At that time,I must be a real successful girl,because I conqure myself!I do hope people who are in the same boat with me now can work together with me!

At that time, I will be a real, successful girl, because I will have conquered myself! I do hope people who are in the same boat as I can now work together with me.

Let's conqure ourselves together!

Let's conquer ourselves together! I'm not too sure "conquer ourselves" is the best phrase you're looking for, though it does make sense...

Awesome job! Very well done. The new words in red are not because of grammar errors, but rather correct inappropriate word choices, usage, etc. Should you have any questions regarding the corrections I made, please feel free to ask.

Don't forget to put spaces after commas. Be wary of plurals, as well. (study -> studies, challenge -> challenges) If there is no definite amount of something, it's best to put it in plural.