Chances of recovering private key from unconscious memory

So I actually solo mined a 50 BTC block back in February of 2009. I wrote the private key on paper. I deleted the wallet.dat file, and then attempted to import the private key manually. It did not work, so out of frustration I tore up the paper in a hundred pieces and threw it away.

The hard drive in question was repurposed 3 years later and zeroed, so the wallet.dat file cannot be recovered.

I guess the question is, 17 years later, is there a way to perform a self-hypnosis to recover the private key I painstakingly wrote down in February of 2009?