yī​nián​zhī​jì​zài​yú​chūn

a year's plan starts in spring

Senses

一年之计在于春/ 一年之計在於春 yī​nián​zhī​jì​zài​yú​chūn a year's plan starts in spring

The whole year's work depends on a good start in the spring; often paired with 一日之计在于晨 yī​rì​zhī​jì​zài​yú​chén to emphasize that early planning is the key to success

References

see 一年之计在于春/一年之計在於春 一日之计在于晨/一日之計在於晨
see 一年之计在于春/一年之計在於春 一生之计在于勤/一生之計在於勤
see 一日之计在于晨/一日之計在於晨 一年之计在于春/一年之計在於春