No plan survives contact with reality
Lesson 2 built the plan. This lesson is about what happens when the project meets reality, and reality always diverges from the plan. Tasks take longer than estimated, people get sick, requirements change, suppliers slip, surprises appear. The mark of a good project manager is not a plan that comes true; it is steering the project to success despite the plan not coming true.
This phase, often called execution and control, is where most of a PM's time goes and where projects are actually won or lost. It has two intertwined activities:
- Execution: the team does the work; the PM coordinates, unblocks, and keeps things moving.
- Control (monitoring): the PM continuously compares reality against the plan, catches deviations early, and steers back on course.
The plan from Lesson 2 is what makes control possible: it is the baseline you measure against. Without it you cannot even tell you are off track. With it, control becomes a steering loop, check where you are versus where you should be, and correct.
Three things dominate this phase and this lesson: tracking progress, managing risks and issues, and managing stakeholders and communication. Master these and you can deliver a project through the inevitable turbulence, which is the whole job.

