In recent years, projects have become more and more important in the operations of public and private companies. Due to increasingly rapid changes in the world, companies have to adapt, and the consequences are complex business projects. Selecting a project manager is one of the most important strategic tasks in project management. For a project manager, making the right decisions can be challenging due to limited resources, especially if they are working on multiple projects at the same time. In this case, jobs must be assigned so that the jobs improve the achievement of the company's strategic goals. This paper will explain project management methods and problems that can happen to a project manager. The research studies the implementation of projects in public and private companies. The status of the respondent in the company and the level of education were also analyzed. A good team and successful business decisions improve the company's status among competitors. In the conclusion, the significance of the project and the project manager for business is described, and the most important discoveries are clarified.