Originally a project was considered successful when the performed output was deemed appropriate. Nowadays customer satisfaction is a point which is considered as a factor for a successful project. It is possible to influence the project success through various aspects. During the entire project it is necessary that all needed conditions are provided to ensure the success. This paper deals with the project manager and the project staff according to the projects success. The question then arises whether they can influence the projects success? Which skills and aptitudes do they need to have? How important is Motivation? In order to answer these questions I dealt with assemble of the project team, team development, motivation theories and the project execution. In conclusion the appropriate assemble of the project team can be seen as the foundation for the future success of a project. Additionally the team development contributes their part as well. However it behoves to the project manager to take care that all phases are passed through successfully. Furthermore the project manager also must provide well defined goals, an appropriate working environment and he must also establish clear framework conditions and must motivate his team.