Jesus had the resilience to continually going back to God in prayer to face his fears of dying. He did not give up but kept fighting with God to get the faith to move forward.
Fearless people have tenacity, which is the ability to keep fighting for something, and to believe you can win.
At the end of this, you should develop a strengthening faith capable of helping you faithfully endure anything, anytime, anywhere, because you know God is working for your good (Romans 8:28-32 Voice).