With a habit of note-taking that's ingrained deep into your mind, you might not even notice when you start losing your memory. That is until you start forgetting names and faces. A suitably organised person could even keep track of all their anecdotes and who has heard them before, thus never becoming that old person who repeats their stories endlessly.
And even if you do start to lose your memory for names and faces, you could probably get a wearable computer and some face recognition software to solve that for you.
Mokalus of Borg
PS - I look forward to being a cyborg as an old man.
PPS - With fearsome radioactive talons, poisoned fangs and a flawless memory.