Final answer:
The relevant concept to effective project management and goal attainment mentioned in the statement is planning and execution. It highlights the importance of setting achievable and appropriate goals with specific deadlines to make them real.
Step-by-step explanation:
In the statement, "If you talk about it, it's a dream. If you envision it, it's possible. But if you schedule it, it's real," the concept that is relevant to effective project management and goal attainment is a) Planning and execution.
Goals need to be achievable and appropriate, which requires a thorough process of planning to determine the steps necessary to bring the goals to fruition. Not only does this planning process involve setting realistic objectives, but it also involves considering the relevant barriers that could be overcome. Furthermore, goals must be time-bound, meaning they have a specific target date or deadline. This is where scheduling becomes essential, as it transforms the abstract idea of a goal into something concrete that can be pursued in real time.