An awful and wonderful surprise!

This is my third short essay and I still want to talk about my job. The last short essay was about the reasons why I want to quit, but today I want to explain why I haven't quit until now.
The last day of last month(上周的最后一天*）was my company's annual meeting. I decided to tell my boss that I wanted to quit after the meeting.
Unfortunately, my ticket number 233 was the lucky number and I won the first prize. I couldn't believe it. I have never gotten lucky in my life. I was so excited at that moment. The prize was a Flat Screen Super TV. My boss saw how excited I was and said to me with a smile "Don't (辜负) let us down for giving you this prize, and enjoy your work" I said, "Yes, sir".

Great story - bad good luck, or good bad luck...

*In English, we usually go from smaller to bigger units, opposite of Chinese. So addresses are number, street, city, state (province), country, times are day, month, year, etc. For instance, Thanksgiving in the US is the fourth Thursday in November. not November the fourth Thursday.