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

1.
monter à la tête, rendre arrogant
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.
Ne laisse pas cette petite victoire te monter à la tête.
•
After winning the award, his ego really started to go to his head.
Après avoir remporté le prix, son ego a vraiment commencé à lui monter à la tête.