Different activities are challenging to different people. It could be something in school (a certain test or activity), a time when you needed to speak in front of the public, a sporting event or a difficult situation you had to cope with.
When you write, think about the following:
- What was the event?
- Why was it challenging? How did it make you feel?
- How did you overcome it?
You could also add the text as a blog entry on your personal website, so that when we publish, you already have a blog entry.