Great Finishers force themselves to stay focused on the goal, and never congratulate themselves on a job half-done. Great managers create Great Finishers by reminding their employees to keep their eyes on the prize, and are careful to avoid giving effusive praise or rewards for hitting milestones “along the way.” Encouragement is important, but to keep your team motivated, save the accolades for a job well — and completely — done
How to Become a Great Finisher - Heidi Grant Halvorson - Harvard Business Review

Source: blogs.hbr.org