Why do you suddenly speed up right before the finish line?
The closer the finish line gets, the harder you push - even on a task you were dragging through a minute ago.
The goal-gradient effect says motivation and effort grow as the remaining distance to a goal shrinks. Your drive isn't tied to how far you've come, but to how little is left. The smaller the gap, the bigger it feels worth closing, so you accelerate near the end.
Your coffee card needs 10 stamps for a free drink. You barely care at 2 stamps, but at 8 you find excuses to buy coffee just to fill it.
You work hardest when the end is in sight, so shrink the visible distance to whatever you want to finish.
Break big goals into short stretches with a near finish line, and you ride a fresh burst of motivation instead of stalling in the middle.
Goal gradient = the closer the prize, the faster the legs.
Learn the idea and practice English at the same time.