This document discusses 13 common mistakes that can negatively impact projects and ways to avoid them. Some key mistakes include employing an inexperienced project manager, poor resource matching that prioritizes availability over skills, unclear objectives or success measures, unrealistic timelines, and lack of buy-in from executives. To prevent issues, the document recommends properly defining the project scope, requirements, and timelines upfront through collaboration with stakeholders; selecting skilled resources and a project manager; clearly communicating; and gaining support from leadership. Vigilant planning and communication can help avoid these common pitfalls.