Your plan is only as good as your execution.
The danger is for you to get stuck in planning when you should be really getting things done or keeping things moving.
Planning the work is easy, but WORKING on the plan is really the challenging part.
When you're stuck, don't just go back to more planning. Find a way to solve the real problem. Or at least get over the bottleneck. That's the only way you'll be able to move forward.
Plan the work. Then WORK the plan.