Confused about my ECA essay

<p>Okay so, a lot of the colleges on my list want the short 'briefly elaborate on an extra curricular...' essay and I was wondering what I should write about. I spent a lot of time lately organizing a Model UN conference in my school (I was the Secretary-General) and came up with an essay on that but now I'm worried if it doesn't really convey 'commitment' since it was basically a one-off event and not a regular activity. So, should I stick to that or write about something different? (Maybe my favorite sport?)</p>

<p>im not an expert, but what are you sports?</p>