“The most important element in an actor’s performance is confidence.” -Howard Hawks
When faced with a difficult task, you can be confident you can accomplish said task for one of two reasons:
Direct experience. You’ve done this exact thing before. You can do it again.
Indirect experience. You haven’t done this before. But you’ve done plenty of hard things in your life. You can do it again. You can look someone square in the eye and say, “I’ve never done this before. But I know I can figure it out. I got you.”
The more hard things you do in life, the more confident you’ll be.