Final answer:
Mentally strong people do six things: moving on, embracing change, staying happy, not wasting energy on things they can't control, being kind and fair, and taking calculated risks while celebrating others' success.
Step-by-step explanation:
The six things that mentally strong people do, as mentioned in the statement, are:
- Moving on
 - Embracing change
 - Staying happy
 - Not wasting energy on things they can't control
 - Being kind, fair, and unafraid to speak up
 - Taking calculated risks and celebrating other people's success