Do Something

You will be shocked, kids, when you discover how easy it is in life to part ways with people forever. That's why when you find someone you want to keep around, you do something about it.

- Ted in How I Met Your Mother - 9x21 - Gary Blauman

Regret

...the deepest, most painful regret of them all: the regret that comes from letting something amazing pass you by.

- Voiceover in Grey's Anatomy - 10x13 - Take It Back