It doesn't look like this was ever published as an ebook.

It does have an audio book version, if you want it in a format without a physical shipment.

https://www.audible.com/pd/My-Lie-Audiobook/B00B5IPRE0

https://books.apple.com/us/audiobook/my-lie-a-true-story-of-false-memory-unabridged/id597732348

Unfortunately, I can't find the audio book version in my local library's association with Hoopla.

My usual searches have failed to dig up a free version of the audiobook.