This question gets you thinking about the key things to do now. Often at the beginning, especially of big projects people focus all their effort on planning. While planning is certainly important, sometimes there are actions other than "to plan" that need to be done early.

Not really, you plan, if the planning calls for short term action, before all planning is done,

If you are going to build, you may need to do environmental survey. So you may do that prior to all planning completed, but doing that, is part of the plan.