I bought this last year to keep track of things like a diary, not to use as a planner. I listed what I did that day, kept track of books I was reading, and wrote down any exercise I did. On the full calendar days, I used color coordinated stickers to keep track of how much walking I did that day.
The other reviews on this product really just tell me the reviewer didn't read the dimensions before purchasing. Yes, it's really small. The description isn't kidding by calling this x-small. If you don't need much room or you have tiny handwriting, this diary/planner's fine. If you need an actual planner, I recommend buying a Moleskine Weekly Notebook. Personally, I used this little one AND a regular sized planner, but of course not everybody wants to do that. So really, I recommend paying attention to dimensions before buying planners, because it's not Moleskine's fault if you think this is too tiny.