Note Behind the Picture

A picture on your mantle unexpectedly falls and crashes to the floor. As you go to pick it up, you notice a note hidden behind the picture. The message is from the future—and written by you. It instructs you to do something important. What does it say?
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A picture on your mantle unexpectedly falls and crashes to the floor. As you go to pick it up, you notice a note hidden behind the picture. The message is from the future—and written by you. It instructs you to do something important. What does it say?