toot your own horn
US /tuːt jʊər oʊn hɔrn/
UK /tuːt jʊər oʊn hɔrn/

1.
se vanter, se glorifier
to boast about one's own achievements or talents
:
•
He's always tooting his own horn about how well he did on the project.
Il est toujours en train de se vanter de la façon dont il a réussi le projet.
•
It's okay to toot your own horn sometimes, especially when you've achieved something great.
C'est bien de se vanter parfois, surtout quand on a accompli quelque chose de grand.