Why is planning important for time management?

Any Project that needs to be executed has to be planned. Any tasks that was begun without proper planning and due diligence is almost always a failure. So, as a responsible project manager you have to plan your project properly to ensure that, your baby is a success. After all, which project manager wants to spend months of his time on a failing cause? Atleast, I don't …

Planning is especially important for the 3 main constraints of a project - The Scope, Time & Cost aspects of the project.