leo's top 5 books?

[Tiny Nietzsche]

mixed in category is okay, whichever u feel it's in your top 5 /TY

[Matt23]

The Work, by Byron Katie.

The Immune System Recovery Plan.

The Science of Success

The Book of Not Knowing

Taming Your Gremlin. 

...

to be fair, these are the majority of the books I've read from his list.  

I'd say I use techniques from "The Work" the most out of these books on a day-to-day basis and from which has helped alter negative emotions most.