It most definitely does work the other way around. The problem of course is that you can’t just wait for motivation to appear. But you can start an action.
I’m just stating the obvious, but I find it odd that the author states the opposite isn’t true.
While directing actors on the film set one of the questions to ponder is whether you first need to put people into an emotional reality so they can produce gestures matching that reality or whether you tell them how to move and then they find their emotional reality within the movements.
In my experience both works and some actors prefer one and some the other. But you can try it yourself, think of a sad thing, slumb together make a sad gesture and listen (emotionally) what happens on the inside.
I’m just stating the obvious, but I find it odd that the author states the opposite isn’t true.