You can overcome fear and gain peace in your life when you have a relationship with Jesus Christ. When we have worry and anxiety it leads to fear, scripture teaches that God did not give us a spirit of fear, but one of power, love, and self confidence. Jesus teaches us that He can bring us a peace that can overcome all fear!
(John 14:25-27 ESV)
These things I have spoken to you while I am still with you. But the Helper, the Holy Spirit, whom the Father will send in my name, he will teach you all things and bring to your remembrance all that I have said to you. Peace I leave with you; my peace I give to you. Not as the world gives do I give to you. Let not your hearts be troubled, neither let them be afraid.