No matter your age or memory-recall capacity, it’s good to write things down sometimes. For one, it helps you remember it better so you might not even have to consult your notes. For another, if you do forget you still have it. If you remember where you wrote it down, that is!
At other times it’s just nice to look back on some things that you’ve written before, to see what you were doing, thinking, and learning at the time. You may even see how you’ve grown and changed since then! This is especially useful when looking at your spiritual and relational growth with God.
Try writing things down and taking little notes. If you find it distracting, then try remembering things to write them down later. Even if you don’t end up writing them down, you have likely made things easier to remember and recall.