Found in 3 comments on Hacker News
taylortrusty · 2021-06-27 · Original thread
I'm a big proponent of Sandler's methodology. The book is cheap and an excellent read. I use the things I learned in it every day:

https://www.amazon.com/Cant-Teach-Ride-Bike-Seminar/dp/09671...

I found a lot of value in taking a class on the Sandler system. Some of the concepts are packaged up here:

http://www.amazon.com/Cant-Teach-Ride-Bike-Seminar/dp/096717...

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