Verb
sweat the small stuff (third-person singular simple present sweats the small stuff, present participle sweating the small stuff, simple past and past participle sweated the small stuff or sweat the small stuff)
(idiomatic) To worry about petty issues or insignificant matters.
I live every day to its fullest extent and I don't sweat the small stuff. Olivia Newton-John
Don't sweat the small stuff... and it's all small stuff. Richard Carlson
It's a long walk back to Eden, sweetheart, so don't sweat the small stuff. Stephen King
You learn to be comfortable in your own skin, and your body changes throughout life, so you can't sweat the small stuff. Chanel Iman