be in someone's shoes
US /bi ɪn ˈsʌm.wʌnz ʃuːz/
UK /bi ɪn ˈsʌm.wʌnz ʃuːz/

1.
to be in another person's situation, especially a difficult one
:
•
I wouldn't want to be in his shoes right now, with all the pressure he's under.
•
If you could just be in my shoes for a day, you'd understand why I made that decision.