So whether it's just you or a team doing the work, and whether the effort is big or small, any endeavor that fits the basic description is a project. You will increase the chances for project success and be able to conduct them more efficiently and effectively if you know more about project managment. You can use your knowledge of project management even if you're not in charge of the project. Project team members with project management training and experience are usually better able to communicate effectively and coordinate efforts with others. Project team leaders who apply the practices and tools of project management are usually able to make their teams more effective and improve the chances of project success.
Projects are multi-faceted undertakings.
The many parts must work together to maximize the chances for successful outcomes. Considerable thought has been given to creating a body of knowledge about how to understand and manage projects. Practical concepts, procedures, checklists, and software tools exist to assist you in your projects. You can use the ones that make most sense to you. The starting point is to understand the choices and how they fit your needs.