There are other options, as well. Pick one event each day that is special or important. The event needn't necessarily be important in the larger scheme of things, just special in some way to you. Write how you feel. This is often much more difficult an assignment than writing about events.
Many writers find it really cathartic to write about how they are feeling.
Oftentimes what may seem overwhelming becomes more manageable when you write it down and read it back to yourself. This process can be a real stress-buster. Write about the people in your life. Write about your hopes for today and tomorrow. It may be fun for you to make a list of what you wish for.