(one's) heart stands still American British phrase
One experiences a very strong emotions, especially excitement, nervousness, or fear, such that it feels as though one's heart stops beating for a moment.
My heart stood still while waiting for the COVID-19 test result. Luckily, I got negative.
Jay: What is your happiest moment of your life? Hannah: My heart stood still when my daughter was born. I felt I'm the luckiest person in the world when I heard her first cry.
Chole's heart stood still when doctor came and told that her dad passed away during the surgery.
My heart stands still every time my teacher calls for my mom, I know I'm in big trouble.
The phrase starts with a verb, therefore, it needs to conjugate within the sentence.
To long for something/ to do something
I'm itching to go to a tranquil place of quiet beauty.