Doesn't appear to be from his books but it's credited to him many places... Here are a few more...
https://www.inc.com/larry-kim/21-brilliant-quotes-from-the-donald-trump.html
I like this one... "Do not spend too much time planning or trying to anticipate and solve problems before they happen. That is just another kind of excuse for procrastination. Until you start, you won't know where the problems will occur. You won't have the experience to solve them. Instead, get into action, and solve the problems as they arise."
He did keep his cool about it, and joked it was part of the event. CNN would have preferred him panic and scream everyone run for your lives we're all going to die! Then they could say hundreds trampled at Trump event! I'm sure it was a GA pilot who didn't see the NOTAM. That will be the last time he does that...
I've mentioned to a few people who were like "I don't like the way he talks and his brash style". I said that's fine you're not picking a husband for life, you're voting for who best protects America and your children's future.
The funny thing this "brilliant quotes" article is from 2015.. I'm sure written now would be "Trump's most racist quotes". Amazing you become president and right thinking, and become a monster.