When you finish every flight, try to write something in the comments section of your logbook, even if it’s just who you flew with. Comments in your logbook on any special occurrences, like permit ferry flights, checkrides, flights with your parents/loved ones, will help you tell great stories at your interviews, plus remind you in later years how much fun you had. On the flip side, if there is something challenging that happens during a flight, maybe add a note with a longer explanation in your personal files to help you recall it if you ever need to answer a question about it in an interview.