This is really easy! All you have to do is get a journal or even any type of notebook and start writing with either a pen, a pencil, or even paint! I love this idea because it's just a way to think back on your life think is important.
[Keep copies of your children's letters to Santa. Put in a scrapbook to give to them when they're older. So cute!] Might be fun to combine the annual ornament, book idea AND the Santa letters every year.