liàng lì
to estimate one's strength
liàng lì ér xíng
to assess one's capabilities and act accordingly (idiom); to act within one's competence
One does what one can.
bù zì liàng lì
to overestimate one's capabilities
liàng lì ér wéi
to weigh one's abilities and act accordingly
to act according to one's means
to cut one's coat according to one's cloth
zì bù liàng lì
to overestimate one's capabilities (idiom)