The first 80% of anything you do will come with about 20% of the total effort required. But the final 20% is what makes the most lasting difference and it takes 80% of the total work. The first 80% is fun, exciting, and progress happens fast. The last 20% is really boring, often times grueling, and requires deep perseverance. This is especially true with anything worth doing.
Discipline with the ordinary is what is actually extraordinary. This is the heart of grit.
When you’re tired and feel like quitting, now is the time to finish the final 20%.