After unremitting efforts, Wang Xizhi finally became a famous calligrapher. Which proverb has the same meaning?

The great calligrapher Wang Xizhi began to learn calligraphy at the age of seven. After every practice, he washes his children in the sleeping pool. He persisted for two or three years. Thanks to unremitting efforts, he finally became a famous calligrapher. This is just in line with a proverb. Hard work pays off. )