Anxiety is Fear's shadow.
You almost always have the opportunity to see Fear's face if only you're willing to follow it around a corner, into a dark alley.
Usually, though, we freak out, cower, then kick ourselves for having freaked out and cowering.
And meanwhile, Fear is left unmolested, unseen, and free to linger, to roam, and to pounce the next time you cross its path. You may again see its shadow, but its face will be unfamiliar if you didn't chase it down the alley when it scurried off the last time.
It's fast; but when you run, you're faster.