How to Lean Into Fears

In the book, down to Chad, or Jay mentions about how you use creative imagery to kind of lean into your fears. So I guess, could you explain to people how you use mental imagery to lean into those fears? There's an example in the book that I think illustrates this quite well; it was at a restaurant where there were fly paper strips hanging and they had dead flies all over them. And bugs is another thing that really bugs me and that's why people are bugs.