The quantity for the project is expanding crosswise over numerous divisions and the related difficulties are substantial. Utilizing a field study, we aim to see how project success can be achieved through project manager motivation by having trust and knowledge sharing among employees inside an organization. Furthermore, we propose a research model that shows the relationship between project manager motivation on project success. In view of gathering data, 400 questionnaires were distributed among workers of the telecommunication sector of Pakistan. Where 16 questionnaires were not filled properly and excluded from the studies. 384 questionnaires were analyzed. Furthermore, the outcome of the gathered data is Analyzed from Smart PLS and shows the positive impact of project managers motivation over project success by sharing knowledge and trust with each other.