go to someone's head
US /ɡoʊ tə ˈsʌm.wʌnz hɛd/
UK /ɡoʊ tə ˈsʌm.wʌnz hɛd/

1.
머리에 오르다, 자만하다
if success or praise goes to someone's head, it makes them feel more important than they really are
:
•
Don't let that small victory go to your head.
그 작은 승리가 머리에 오르지 않게 해.
•
After winning the award, his ego really started to go to his head.
상을 받은 후, 그의 자만심이 정말 머리에 올랐다.