持之以恒
(chí zhī yǐ héng)
坚持不懈
(jiān chí bù xiè)
善始善终
(shàn shǐ shàn zhōng)
始终如一
(shǐ zhōng rú yī)
有始有终
(yǒu shǐ yǒu zhōng)