Yes the executing phase is very important, this were the project is done. However I don’t think it’s the most important. In my opinion planning phase is the most important. You would have to establish roles and responsibilities, make sure you have a strong schedule, and need to set a budget for the entire project, etc. Before you start any project you need to have a good game plan. Everything has to be set in a timely manner before you can even execute. Not going by the plan, the execution phase will not be successful.