Old habits die hard

tʃaɪniːzle̞tə tsɯᵝ tʃaɪniːzle̞tə no̞ tʃaɪniːzle̞tə tʃaɪniːzle̞tə mä te̞ dʒapəniːzle̞tə

In Japanese 三つ子の魂百まで。

This Japanese idiom, literally meaning "The soul of a three-year-old lasts until 100," emphasizes the lasting impact of early habits.