The difference between a Joyful Post-It and a handwritten note is intention. It's also fun to elevate the humble sticky note to a more refined level with a serif font and a contrasting border. I bet you'll keep your Joyful Post-It much longer than one with your chicken scratch on it, too!
Step 1: Design
I used the font Calligraph421 BT in my version of Microsoft Word. If you don't have it already, download it here.
36 was the right font size for my message; use the ruler in your word processor to make sure your message isn't too big.
Arrange your message in columns if you want to make a bunch.
Step 2: Print
It is possible to print directly onto a Post-It. Here is a nice tutorial on how to do that. However, the printer in my office doesn't like this method. The Post-Its can cause a jam. And everyone knows, paper jams are the opposite of love and happiness.