It's All in the Details
It sounds counter-intuitive, but adding details when you want to remember something actually makes it easier to recall. Let's say you need to stop at the store and pick up a gallon of milk. Create a story around the milk. "I'm going to drive down Main Sreet and turn into the parking lot of the Stop and Shop. It's on the corner of Main and Willow. Then I'll march down the dairy aisle and grab a plastic jug with the pink label of Stop & Shop's house brand of milk..." It's more likely that you'll remember to get the milk with all those details added, rather than just saying to yourself, "I need to remember to get milk."