I'm still combing over old agendas and journals in my cabinets. I love reading some of the stuff I write. It's a form of self-exploration that is so revealing. Unlike reading someone else's diaries, you are not understanding someone else's history, you are glimpsing into your own mind. Nothing is as intimate as having a conversation with your past self. (If I could talk to my future self, that would be cool too.)
Some things stay the same though even after a long time. Here are some entries I wrote for pre-set questions in my agenda:
I feel important when: "Somebody asks me for help"
I am able to: "Play the Piano lousily"
When I need help I turn to: "My family or friends"