I can’t offer you a finite list of things for you to do, nor can I tell you exactly how you can smile at fear.
I’m working with turning up the edges of my mouth when I feel anxious. The advice I give myself is: Don’t avoid the opportunity to grin back at fear.
And if you can dive into that empty feeling in the pit of your stomach, well, that would be excellent!
We each have to find our own inner grin