Write a thank-you card. Change a life. Seriously, it's that easy.

New research has proved that sending someone a thank-you note generates an ecstatic response in the recipient. Did you catch that? Ecstatic! It gets better. Writing the note creates a positive response in the sender, too.

On this Dying to Ask:

• I chat with KCRA 3's Edie Lambert, a fellow devotee of the thank-you card, about why we're addicted to putting a stamp on saying thank you.
• We pay homage to Princess Diana, one of the most prolific thank-you card writers in history.
• We break down how two psychologists studied the "thank-you card effect" and why even the psychologists were floored by what they found.
• We share when we send expressions of gratitude and how we make it easy to pull off, even for our kids.
• And, we invite you to join our "thank you card challenge" in 2020.