To help me understand what you're looking for, could you provide more details? For example:
* Where did you hear about this lesson? (e.g., a book, a class, a website)
* What was the subject of the lesson? (e.g., the parable of the prodigal son, a lesson about responsibility, a historical figure's son)
* What was the main point or takeaway from the lesson?
With more information, I might be able to help you identify the lesson you're thinking of.