The suffering is real but you're suffering a simulation. It's not real. 

It's imaginary. 

It's all lies.

A part of your own mind made it up so it can't be an actual danger.

Actual dangers come from outside you.

Fear is meant to protect you from danger. 

But when fear overworks and causes life to become a living hell, it loses its whole point of existence.

Fear isn't meant to make you suffer endlessly, it is only meant to spur you to act in defense for a short while. If you keep looping in a fear cycle, fear has defeated its own purpose and should stop functioning.

There is a reasonable amount of light fear called Eustress that is justified and keeps you on your toes in a hostile environment. Anything more than that fear, anything that paralyses you, that hinders your full functioning, that prevents you from thinking straight, that prevents you from working according to a plan, is excess fear, and by definition has defeated its own purpose. Such fear has no point existing.

The higher number of times you affirm "I'm actually safe except for XYZ" the the faster you will feel better.

Remember, unless you're actually in an active war zone or shooting, you;re quite safe. Say it to yourself - "I'm actually quite safe except for XYZ".