First of all, fear is a very low vibration.

When you are in fear, your vibration drops to a very low level and you can easily catch any disease.
The immune system is weakened because of the drop in vibration.
So you will be exposed to various infections, but also to more serious diseases.
By the way, a person who lives in fear can also get psychological diseases, and a persecution mania can develop.
Or, in a more serious case, depression.
And depressed people tend to commit suicide. A person in fear is also under the influence of stress.
As a result of stress, various diseases develop, such as stroke, heart attack, and various allergies.
What can we do to not be afraid of anything?
When the feeling of fear comes to you, examine why you are afraid of that thing or being (persons).
Ask yourself what is the point of being afraid.
Steps to overcome your fear and anxiety in the face of anything:

1. Expand our knowledge and intellect to be well informed about things.

2. Avoid negative, depressing news, things that cause stress.

3. Raise our vibration through spiritual knowledge, meditation and prayer. Contact only positive beings through prayer.

4. We avoid those people and beings who want to instill fear in us. For they are called oppressors.

Only unethical but well-informed people cause fear in uninformed people.

You can get more information through my books