G. Mark’s Answer
In an engineering position, you will generally be given a project task. You may be involved in the planning stage and work with the team to divide the tasks. The first stage will be defining the problem to be solved. This is where working with the team and effectively communicating is essential. You may be working independently, but most often not, since projects are tending to get larger and more complicated, not less. A mechanical engineer will be working on defining the requirements of the project. Unless you're a novice or you focus on the design and implementation phases. Obviously, a mechanical engineer will be working on designing the mechanical aspects of any solution or project. One thing I recommend to my students is to get involved in a class that focuses on projects, preferably a team project. This is an excellent way to get familiar the the "global engineering process", which defines these stages. This can be a tremendous amount of fun and very, very educational. You might want to check for internships or co-op positions wherein you will actually work at the company in a mechanical engineering capacity. All the things I'm tell you now will become second nature. Plus, you'll get a better idea of what sorts of things fit your personality and preferences. In so many questions of this type, I recommend taking a personality occupational assessment survey, like RIASEC. I could tell you more about global engineering process and the day-to-day life an engineer, but it's always a great idea to start with seeing how closely your personality fits with people who are already successful and enjoy it.