What type of employees do you find difficult to manage?

"I find it most challenging to lead individuals who are not self-motivated. As a person in a leadership role, I want to do everything in my power to ensure that my team members are successful, but I cannot force them to want to exceed their goals. The key point is that I am actively working to improve in this area of leadership. I recently started reading 'Managing Difficult People, A Survival Guide for Handling Any Employee' by Marilyn Pincus. It's been a valuable read as she covers all types of challenging personalities, including The Bully, The Complainer or Whiner, The Procrastinator, The Know-It-All, The Silent Type, The Social Butterfly, The 'No People Skills' Person, The Rookie, The Overly Sensitive Person, and The Manipulator. I think every leader should read this one."