Ask HN: How many books have you started reading and sure you will continue?

One.

Sorry, two. I am following Samuel Pepys daily as a feed, so I got a biography of Pepys. Half way through I realised it would spoil the daily revelations I get. I have put it aside for 9 years when I will be done!

https://www.pepysdiary.com/diary/1660/08/20/

I finish pretty much all the books I start reading, i.e. at least a few dozen per year.

J M Coetzee, Diary of a Bad Year.

You could try this at the public library.