Zig Ziglar's Secrets of Closing the Sale / Der Totale Verkaufserfolg

His emphasis on closing sales feels central to the message, but I'm curious whether this focus came from personal experience or observing common pitfalls.

The real-life anecdotes seemed to bring the concepts to life — which stories resonated most and why?

Considering the evolution of sales over the years, I wonder if his methods still hold up or if they need updating for today's context.