I started to become more self-disciplined at the age of 30

At the age of thirty, start to be self-disciplined!
On Jiang Chen’s 30th birthday, he obtained a system that could make him stronger through self-discipline!
Discipline yourself for a day and get a small reward;
Discipline yourself for a week and get a moderate reward;
Self-discipline for one month, get the best rewards;
One year of self-discipline will earn you the best reward;
Ten years of self-discipline, the prize is unknown.