In the Science Fiction film Total Recall, Arnold Schwartzenegger's character has his memories replaced. Meeting with a mutant who can restore his memory, he is asked why he wants it back. "To be myself again," he answers. "You are what you do," the mutant replies.
There's a philosophical assumption there that goes back to Locke that suggests our identity comes from our memories. Nina Strohminger argues that this is not plausible. When people suffer radical memory loss, their sense of self generally remains the same -- and their personalities are often quite stable.
If you are what you do, it isn't what you have done, in other words. It's what you would do.
Which claim seems right to you?