Personal AI with memory

Hey folks. Anyone know of an AI tool that I can use as a second brain/personal assistant?

I imagine something I can either connect to a cloud storage like Google Drive, Dropbox, etc. and/or upload documents to it. And it would use all of the info from that data (what it knows about me, my writing style, my thoughts, etc.) and help me brainstorm prompts or write in a way that mirrors my natural thoughts.

I forget things often but …

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