I am terribly sorry that I can not say where this idea came from. When I'm browsing and looking for wonderful idea's and lovely blogs, I often stumble upon a wonderful DIY. I normally just save the pictures in my 'DIY' folder and mention where I got it from. But in this case I forgot. Sorry.
This is a lovely idea to replace that old journal you really never write in.
You can make your own and write something wonderful you did every day. Next year you can use it all over again and it will remind you of all the wonderful things you did the year before. It's a simple and cheap idea, but I love it.