work up

US /wɜːrk ʌp/
UK /wɜːrk ʌp/
"work up" picture
1.

to develop or create something gradually

:
She needs to work up the courage to ask for a raise.
The chef will work up a new menu for the restaurant.
2.

to make someone feel a particular emotion, especially a strong one

:
He tried to work up some enthusiasm for the task.
Don't work yourself up over small things.