By consciously thinking once a day about one important thing you have learned that day you’ll: fix it into your long term memory; motivate yourself to learn something new every day.
Keep a notebook and get into the habit – just before you go to bed – of thinking about what you have learned that day. Write it in your notebook. Keep the notebook beside your bed to have a visual cue to help you remember and turn this into a habit. After a year look back and see how you progressed.