toughen up
US /ˈtʌf.ən ʌp/
UK /ˈtʌf.ən ʌp/
1.
to become or make someone stronger, more resilient, or less sensitive to difficulties or criticism
:
•
You need to toughen up if you want to succeed in this competitive industry.
•
The coach told the team to toughen up and not let the loss affect them.