20 March, 2025

How to Build a Lessons Learned Log: Step-by-Step


One of my most popular videos is Lessons Learned Meeting: How to Make it Excellent. But, how do you capture those lessons learned in a structured lessons learned log?

If you prefer an article: How to Get Your Next Lessons Learned Meeting Right

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This is learning, so, sit back and enjoy

Lessons Learned Log

The good news is that a lessons learned log is simple. It could even be a set of pages in a physical notebook. You can use a table in Word, Pages, or Google Docs. But I prefer a simple spreadsheet.

That’s how I am going to describe it, but creating your log in another tool is pretty much the same.

Create Your Lessons Learned Spreadsheet

First, open a fresh spreadsheet and give it a name.

Next, create a title block for your log. This should contain things like:

  • Lessons Learned Log
  • The name of the project (and its code, if it has one)
  • The names of the project management and project sponsor

Now set out the log itself, in the form of a table.

Building Your Lessons Learned Log

Columns 1 to 8…

  1. A unique ID for each lesson
  2. A date
  3. I like to record the author
  4. A short-form title for the lesson
  5. A thorough description of the lesson learned
  6. Recommended actions that flow from the lesson
  7. Importance or Impact rating.
    Let’s keep it simple and stick to high, Medium, and low.
    But you might also include an urgency as well
  8. Wherever you have actions on a project, assign an owner who will be responsible for carrying them out.

Recording Progress on Your Lessons Learned Log

Next, you may want to create some columns to record progress and impacts. To keep it simple, I suggest:

  1. What was done
  2. When it was completed
  3. Impact
  4. Further recommended actions
  5. Open or closed

What Kit Does a Project Manager Need?

I asked Project Managers in a couple of forums what material things you need to have, to do your job as a Project Manager. They responded magnificently. I compiled their answers into a Kit list. I added my own. 

Check out the Kit a Project Manager needs

Note that the links are affiliated.

Learn Still More

For more great Project Management videos, please subscribe to the OnlinePMCourses YouTube channel.

If you want basic Management Courses – free training hosted on YouTube, with 2 new management lessons a week, check out our sister channel, Management Courses.

For more of our Project Management videos in themed collections, join our Free Academy of Project Management.

For more of our videos in themed collections, join our Free Academy of Project Management

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Mike Clayton

About the Author...

Dr Mike Clayton is one of the most successful and in-demand project management trainers in the UK. He is author of 14 best-selling books, including four about project management. He is also a prolific blogger and contributor to ProjectManager.com and Project, the journal of the Association for Project Management. Between 1990 and 2002, Mike was a successful project manager, leading large project teams and delivering complex projects. In 2016, Mike launched OnlinePMCourses.
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