(I'm re-posting this for someone who asked.)
Fear is a lie.
For the most part.
Most things I have feared never came to pass. In that sense, fear is a lie.
There are real fears. Some things we were made to fear. This is how God designed us. This kind of fear protects us. These are rational fears.
But many of our fears are irrational. Yet the emotion of fear is just as real. The more fearful a person is, the more they interpret the events of life through the lens of fear. They are dominated by mistrust, controlled by self-preservation.
One thing I do to combat fear (yes, I can get fearful) is meditate on biblical truths. The more I read and say them over and over, the more they descend from my mind into my heart.
As the apostle Paul said, "Whatever is good, whatever is true, whatever is beautiful, think on these things." (Philippians 4:8)
Read these words. Take them in. Memorize some of them.
33 Verses to Remind Us - We Do Not Have to Fear: