事在人為

the matter depends on the individual (idiom); it is a matter for your own effort / With effort, one can achieve anything.

matter / thing / item / work / affair / CL:件[jian4],樁|桩[zhuang1],回[hui2]

to exist; to be alive / (of sb or sth) to be (located) at / (used before a verb to indicate an action in progress)

person; people / CL:個|个[ge4],位[wei4]

artificial / man-made / having human cause or origin / human attempt or effort

as (in the capacity of) / to take sth as / to act as / to serve as / to behave as / to become / to be / to do / by (in the passive voice)

because of / for / to