My long summer vacation was over yesterday.
I couldn't focus on my duty early in the morning on the first day back to work.
But there were some a lot of work to to do fast, so I had no choice but to do it immediately. After that, I was getting used to work gradually.
I guess sometimes The the deadline seems like a driving force for me to work hard.
My concentration is high strengthens when I'm urged with a get a push from a deadline. It feels amazing, like a magic.
It is scorching hot outside today as well. There was a heat wave advisory updated into warning for nationwide.
I hope it passes Korea soon.

REVISED:

My long summer vacation was over yesterday. I couldn't focus on my duty early in the morning on the first day back to work. But there were a lot of work, so I had no choice but to do it immediately. After that, I was getting used to work gradually. I guess sometimes the deadline seems like a driving force for me to work hard. My concentration strengthens when I'm urged with a deadline. It feels amazing, like magic. It is scorching hot outside today as well. There was a heat wave advisor nationwide. I hope it passes Korea soon.

Hi Tony, 

It's been quite a long time since you had a composition. And I'm glad that you made a longer one. Corrections and changes made here will serve as a guide for you so please check it. I just want to encourage you to always use the proper punctuation, small and capital letters as well as words that would fit accordingly to your sentences. Nonetheless, you just showed how eager you are to make improvements. 

Teacher Neiz