あしもとあかるいうちに
Composed of
at one's feet; underfoot; gait; pace; most recent; current
light; well-lit; bright (of a colour); brightly-coloured; cheerful; bright; encouraging (for the future of a project, etc.)
inside; within; while (e.g. one is young); during; among; amongst; in (secret, chaos, poverty, etc.)