The conclusion is where you sum up what you have said in your essay. It is absolutely vital – never fail to write one. This is the last thing an examiner reads and counts for a great deal: a good conclusion can rescue an indifferent essay and set the seal on a good one. It is here that you draw together the threads of your argument and hammer home your points, leaving the reader in no doubt as to your answer. You should refer explicitly to the key words of the question and reinforce the points you made in the main body. Above all it should contain nothing new – it is simply a restatement of your argument. If there is anything you have not already said it is too late now!
Avoid slipping into clichés or generalities. Take this opportunity to really examine an experience that taught you something you didn't previously know about yourself, got you out of your comfort zone, or forced you to grow. Sometimes it's better to write about something that was hard for you because you learned something than it is to write about something that was easy for you because you think it sounds admirable. As with all essay questions, the most important thing is to tell a great story: how you discovered this activity, what drew you to it, and what it's shown you about yourself.