You know better, but how do you make a convincing argument to have project reviews?
You must take the discussion with your project sponsor to a different level. It's not "we just need to know what happened." It's "we want to take action and get better results the next time around."
The lessons learned meeting could make you aware of changes that may be needed to turn business from being bleak to being more successful. Give your sponsors succinct reasons to pursue assessing projects to make improvements.
Consider these tips to influence your supporters:
Gather statistics and determine what you need to measure.
If your company is concerned about quality, chart examples of projects where quality was lacking. If ROI for projects has not been good, share those examples.
Share success stories.
Bring up achievements that occurred because of the attention on improvement. Discuss the situations that will make a difference to the bottom line.
Make a plan.
As a project manager, you already know that planning is important. Prepare a well thought-out plan for gathering and presenting the lessons learned. Then use the newly acquired knowledge.
How have you built a business case for lessons learned and project reviews?