I lost some official documents today.

I made a big mistake which let others be blame cause of me.

I apologize.

I'll be more careful to provide it happen again every time I do the P.T. job.

Sorry can’t make up anything.

And the most important thing now is take this lesson, bear in mind.

My professor once said:

Every student has the right to make mistake.

That’s exactly what we go to school/university for.

I’ve been heard:

The work gets more difficult as you get older,

You learn more and you gather more experiences,

There is deeper pain and higher high.

Tomorrow will be fine.