Examples of using "расстраивайся" in a sentence and their english translations:
Don't get upset!
- Please don't worry.
- Please don't be upset.
Don't be upset.
Please don't be upset.
Now don't be upset.
Don't be angry.
- Don't be upset.
- Don't get upset.
Don't get upset about small things. Try to think of things like a rich person who can afford not to argue.