俗话

有志者事竟成

yǒu zhìzhě shì jìng chéng

Where there's a will, there's a way.

三个臭皮匠，顶个诸葛亮

sān gè chòu píjiàng, dǐng gè zhūgě liáng

Three cobblers' wisdom equals Zhuge Liang's.