I am a big fan of gratitude. So, number 6 on the list is: learn to say thank you in 50 languages (or more). Bonus points for please.
Also, while I am sure I could look these up and practice saying them, I intend this list to represent languages in which I have had the opportunity and the occasion to personally say thank you.
Thank you. English Please.
Merci. French S’il vous plait.
Gracias. Spanish Por favor.
σας ευχαριστώ. Greek παρακαλώ.