Where are my notebooks?

I keep a notebook for my thoughts and ideas ever since I was ten, I've lost a lot of them but I continue to buy and write each time I lost one. Now that I publish my thoughts online I still use a notebook to write down my thoughts. I recently lost a very valuable notebook that has all of my thoughts and drafts regarding a book that I've been working on. I looked all over but I can't find it, I just hope I could retrace my ideas so I could put the project together.