We, as Protestants, have such a rich heritage in the hymns that have come down through the centuries. One that has meant a lot to me recently is Rise Up, Oh Men Of God.
The first verse says: "Rise up, oh men of God. Have done with lesser things. Give heart and soul and mind and strength, to serve the King of Kings."
I've been trying to 'have done with lesser things' and it's making a difference in my mental state which is affecting my outward demeanor. I'm not angsting anymore and am more joyful and calm.