Everything you have, given as if your life hung on it: the word for the effort that holds nothing back, and the ordinary Japanese praise for anyone who gives it, a student, an athlete, a worker, a fighter. Inside it is an older picture, one place, one life, the single fief a warrior would die to keep, so the word can mean a whole life staked on one thing as much as a day's hard trying, and which you hang it for is yours. The scroll brushes the word as every Japanese reader now sees it; the older spelling, 一所懸命, is the same word, and both are correct.
four-character idiom
一生懸命 is composed of the words 一生 (read isshō) meaning "one's whole life;the greatest of one's life" and 懸命 (read kenmei) meaning "eagerness; risk one's life".
We want you to be as happy with the meaning as you are with Master Takase's art. To learn more, visit Philology of 一生懸命.