My life has a limit, so I've decided to stop pulling all-nighters at work.
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history
Opening of 庄子·养生主: 吾生也有涯,而知也无涯。以有涯随无涯,殆已. Zhuangzi warns that chasing infinite knowledge with a finite life is dangerous, a Daoist argument for 养生 (nurturing life) over exhaustion.
usage
吾 (wú) = classical 'I' (modern 我). 也 here is NOT 'also', it's the classical copula-like particle marking the subject ('as for my life...'). 涯 (yá) = 'shore / limit.'