Why don't you consider revising the whole sentence?
"We live in a world of discontentment, and when someone becomes discontent, the first thing they want to change is themselves . . ."
It is up to you, but your first part really could be an independent sentence:
We live in a world of discontentment. When a person becomes discontent, their first impulse is to change from within. (Or, "... change from within is their first impulse." if you have hang ups about ending a sentence with "within")
If you want to reduce your shifting from singular to plural, you might revise to: "When a person becomes discontent, the first impulse is to change from within." This implies that the impulse belongs to that person without directly connecting the two.
Good luck with your paper!
__________________
---
You do not really understand something unless you can explain it to your grandmother.
- Albert Einstein
---
|