In the movie One True Thing, Meryl Streep’s character tells her daughter (Renee Zellweger):

It’s so much easier to be happy, my love. It’s so much easier to choose to love the things that you have…. Instead of always yearning for what you’re missing, or what it is you’re imagining you’re missing. It’s so much more peaceful.

I wouldn’t say it’s easier. It makes for a better life, though, if you can master it. I’m trying to try.