to constantly strive for self-improvement; to exert oneself without ceasing; continuous self-renewal

To grow and multiply without end; to continue reproducing or evolving eternally.

(idiom) flowing like a river without stopping; describes a continuous stream of people, vehicles, or activity

(idiom) continuing for a long time without stopping; used typically to describe applause or cheering

while there is life, the fight continues; to fight to the last; to keep fighting as long as one draws breath