Dear Awesome Dentist:
Thank you so much for making a big block of time for me this morning to replace the crown on my back molar that cracked last night. And thank you for being a master with the novocaine, and for having the fancy newfangled computerized setup for fabricating crowns on the spot. It put a dent in my wallet, but so it goes, it was money well spent.

Dear Karma/Luck/whatever:
Thank you for being with me today!