hard day!

Today is Sunday and there will a math examination in next Wednesday.
That’s why I made up my mind to study math with a textbook.
But because there is a part-time job today, I was at a loss what I doing.
After all, I studied it in workplace while an intermission.
Though It was hard for me to work and study nothing a break, I held out.
After my work, I came back home and I discovered that I had forgotten my textbook on the desk!
So, today was very hard day!