as soon as you have acquired it.
Have you noticed this as well?
It starts out with you wanting to learn something which may seem like a long way to go and a huge task. Depending on what you have in mind, it may really take quite a long time.
After you are done, finished the exam, start practicing and using the knowledge in your daily life and work, it seems effortless to you since you know what you are doing.
The knowledge became part of you and seemingly disappeared. You do not notice any more that you have the abilities you have. This can become an obstacle when you need to “sell” yourself, your expertise and knowledge, for example when job searching, or trying to move up in a company.
Then the ability of being able to look at yourself from a little distance would come in handy. Self reflection is a skill by itself, needs some practice and at best, support from another person.
When we think one step ahead: how about if we would like to help others gain knowledge, teach and mentor people to learn.
This looks like an even bigger challenge as behavioral economist Dan Ariely confirms: Ask Ariely: Do Professors Have to Be Boring?
Why? I think the reasons lies in the fact that the learning path of everyone is different as we are all unique individuals and go different ways to reach our goals.
A good teacher leads the way for you to find your own learning path.