Hello there! 
Well, you can choose an interesting topic. 
For example: 
1) The importance of social media 
2) The dark side of social media 
3) Worldwide ban for texting while driving 
4) The best moment of your life 
Anything you want :) These example above are some essay I wrote last year. 
If you need help with writing the essay, I can help you. Just PM me. 
Best of luck!