I have a handful of memories of every year starting back around four, but my memories are as few for age five as for age twelve, and I'm eighteen now.
The thing about my memories is that they are starkly different after age nine. Before then I was completely unaware of any social deficency I might have, and everything is those memories is so intense; too bright, too loud, etc. I also don't remember people. However, when I turned nine, I started remembering people and things with details. I sort of think that's the age when I become self-aware.
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"I myself am made entirely of flaws, stitched together with good intentions."--Augusten Burroughs