Blood never forgets. Blood carries DNA which contains part of every one of our ancestors, all the way back to the primordial slime. Vitae carries the ancient curses. It never lets you forget who you are. Everything we need to know about who we truly are is in the blood. Listen to it so you can discard the "False Self".

Not to mention the external influences, and for those of us who still have them, dreams. You need to consolidate short term memories into long-term storage, right? But isn't the whole idea that every time you pull out and dust off an old recollection to reminisce on you alter it with your current emotions, experiences, and interpretations? How else would journal keeping creatures, kindred or kine, be surprised when reading old entries... but then again; we're dead. It is an interesting topic to bring up: do inert chemicals and the supernatural gift of our vitae enable us to keep more pristine memories indefinitely? Do we have space to store them all? I would assume yes, yes we do. There is a lot of strange space in there -isn't the closest approximation several thousand terabytes or some nonsense... How do Kindred deal? I think if they do forget or distort their memories, they probably won't care. If they write shit down, come back a few hundred years and read it and don't remember, they might freak out, but, given that we are predators, I think we should be able to retain feelings longer than facts. Example: I don't like X place, it is fuck off creepy, rather than, I was at this exact location 252 years, and three months ago, at 0341 on a Sunday morning with my pet rock and Y occurred.

Personally?
I get by one night at a time, honey. If I have forgotten stuff since my Embrace, meh, if I can remember perfectly every fact forever... I might need to invest in some mind soap.

I never write down thoughts or activities. All these movies and shows with vampires retaining journals seems to be too dangerous should someone come across such.

The loci method works well for me.