This question is about project manager and what a project manager does.
Is a project manager a stressful job?
Yes, being a project manager is a stressful job. As project managers are in charge of the group's overall output, stress comes from making unpopular decisions designed to either keep the project on track or cater to changing client expectations.
Positive stress can appear as anticipation of completing a project or even excitement about a project nearing its conclusion. Negative stress can manifest as self-doubt regarding the quality of work or meeting the time requirements or specific client demands.
Some of the negative stress associated with being a project manager diminishes over time. Managers with more experience know what to expect and can anticipate some of the challenges that trouble those newer to the profession.