Spanish (Castilian) · C1 general

Hacer de tripas corazón

Literally: "To make a heart out of intestines"

To pluck up courage or grin and bear it

Example

Tuve que hacer de tripas corazón y hablar en público a pesar de mi pánico escénico.

I had to pluck up courage and speak in public despite my stage fright.

Pip says

When things get tough, you have to gather all your inner strength! This expression is perfect for facing your fears with a brave face.

What does this phrase mean?