Word Choice What is the analogy in this passage? What two ideas are connected in this analogy? Passage The day of the big

Word Choice
What is the analogy in this passage? What two ideas are connected in this analogy?
Passage
The day of the big game, I woke up with a knot in my stomach. Even though I had practiced hard, I was still really nervous. But I got ready and arrived there early. The coach was in the locker room going over the game plan. When I told him how nervous I was, he said that fear is like a stray cat; if you let it in, it will rip up all your furniture — but if you look it straight in the eye, it will turn tail and run.
1- The analogy in the Text :
2- The two ideas that are connected in this analogy: