“Learning from the past” should not be a random thing. We should have a planning process, make and execute plans and look at them after they are executed. Ask, “What worked?”, and do more of that and less of what didn’t work.
When someone says they learned their lesson, it’s often simply because a thing didn’t work out, and not often enough because we took the time to review our plans and our actions.
Take time more often to learn–the good and the bad–intentionally.