大事の前の小事

だいじのまえのしょうじdaijinomaenoshouji

expression

1. don't put the trivial ahead of the important
2. don't sweat the small stuff
3. don't bother with the details (before embarking on a great enterprise)
4. read the fine print
5. be careful of the small things (before embarking on a great enterprise)

Study it in Yanamino