All you have to do is make a mock up diary entry about an event like this in about as stated 80-90 words.
Example: "Dear Diary - Not so long ago, I saw a family of 4 suffering in the freezing winters, sitting there in horrible conditions as there was nothing else they could do. It deeply saddens me about their circumstances and I just keep thinking about it in my head, a thought that I can't stop. I felt so bad as I then tried to help them only to come to a realization that I, myself have nothing with me as well, I guess the winter season really isn't for everyone after all." Or something like that, it's just some random example I came up with in a few minutes I wouldn't recommend copying it, just showing what the overall goal of the question is, not really sure why it is a question if there is no definitive answer to it. Gotta be 80-90 words though