Circumstances from your life question for October homework.

The October assignment asks us to list circumstances from our lives that we consider to be negative and positive. If circumstances are just facts, how are they negative or positive? For example, two years ago, I received chemo for Non-Hodgkins Lymphoma. While that wasn’t super fun (a thought), the treatment is only a fact and isn’t negative or positive. If I’m oversimplifying this, could you provide examples of positive/negative circumstances?