Natural translation for "Everything worth doing requires self-discipline and effort"
There is the phrase:
好事多磨
ABC Proverbs defines it as:

Lit [Accomplishing] great things [has] many hardships.
Fig In accomplishing anything worthwhile, one is bound to encounter setbacks.
Note: originally hǎoshì referred to a successful marriage or engagement, so “it takes many twists and turns to accomplish a good marriage” is sometimes equated with “The course of true love never did run smooth.” Cf. JW, chap. 28; DRC, chap. 1; Èr Kè Pāi'àn Jīngqí, chap. 9.

There was a headline from an hour ago on 速途网 that reads:

EOS主网的艰难启动是好事多磨，还是持币者的投机心理大于信仰?