"They told me to rely only on my own memory," he said.

I wouldn't rely on his memory if I were you.

After that I'll have to rely on my memory.

Could I rely on my memory of where the cave was?

You should not rely on your memory about important issues or decisions.

They, too, had to rely on their memory of an advertisement.

But it also meant that he was forced to rely on his own memory for things like people's names.

And I don't have to rely on my memory.

I'd rely on my memory of what it had said.

Don't just rely on your memory, particularly if you've had a difficult year, as you will fail to recall many good events.