To act according to one's capability; to do what one is capable of.
量估量；行行事。按照自己力量的大小去做，不要勉强。
《左传·昭公十五年》力能则进，否则退，量力而行。”
When planning a project, it's wise to assess your resources and budget, and act accordingly.
Learn the next connected idiom: 量力而行 (liàng lì ér xíng) → 行之有效 (xíng zhī yǒu xiào)
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