my daily life

1.
Last night at my office, Me and my coworkers worked overtime. 

Although I had a planned to go somewhere else with my wife, I couldn't stop working.

Next week, I am scheduled to go to foreign country for business trip.
Until that time, [I have to end remaining works(jobs).] -Not sure what you're try to say

At 6am, the jobs I had to do were done. I slept for a few hours.
I was exhausted and but I was trying to keep my promise.

My family went to Mask dancing festival in Andong city.

2.
[Remaining jobs were lots]-kind of confusing I think you meant [you still had many jobs left, that still you have to do]

Suddenly I felt I had to organize my jobs in list.
First I listed my jobs, Second I set priority on my jobs.

This was pretty good, with very few mistakes.

Keep trying hard! Bye bye.