They make decisions that can be influenced by much more than logic, issues like home life, personal values, ego, fear, greed, etc. A leader must understand what motivates each key individual, how they make decisions and process information, what they hope to gain personally short and long term. A leader must help each individual understand how the accomplishment of a team goal or objective, is directly in line with their personal desires and goals. If that alignment is not immediately obvious, then a vision of the long-term gain to the person needs to be communicated. If there will never be such alignment, for a short strategic play or long term reward, the leader must see this problem and make changes to personnel or plan.
Laggers react, recoil and retreat.
Have a beautiful day wherever you are. Leaders seek out discomfort zones to automatically gain new experiences. Volunteer to speak under an assumed name to a sixth grade class on a subject the class members choose. Attend in person instruction in computer generated embroidery at a local sewing machine store. Memorize the names and department of new people and go see them if only to say hello.