乏术

píng héng gōng zuò hé jiā tíng shǐ wǒ fá shù

平衡工作和家庭使我乏术。

I lack effective methods to balance my family and work.

tā yào guǎn lǐ sì gè shì chǎng kǒng pà huì fēn shēn fá shù

她要管理四个市场，恐怕会分身乏术。

She wants to manage four markets, I'm afraid she will have no methods.