How can I comfort my sister when I am busy with work and have no time to send a part-time circle of friends?

Tell him that there are gains and losses, people are not superman, and there is no need to cover everything.

The so-called "lost in the east corner, harvested mulberry" has no time to make friends. If you do a good job, you may be promoted and reused by your boss. There's no need to be sad. Besides, sadness is really useless except to add trouble.