Today, people rely much more on technology than pen and paper to remember their day to day items. What they fail to realize is that when you actually write things down on a piece of paper with a physical pen - not type them on your phone or laptop - you are more likely to remember them.
Now once you turn that piece of paper into a Post-It note, not only will you remember it, but it will stick in your mind, and where you can always see it.