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

1.
subirse a la cabeza, marearse
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.
No dejes que esa pequeña victoria se te suba a la cabeza.
•
After winning the award, his ego really started to go to his head.
Después de ganar el premio, su ego realmente se le subió a la cabeza.