his/her success
We congratulate you on your success.
Cuando me enteré de su éxito, le escribí una carta.
When I learned of his success, I wrote him a letter.
Su éxito fue nada menos que un milagro.
His success was nothing short of a miracle.
Su éxito no se debe tanto al talento como al esfuerzo.
His success is due less to talent than to effort.
Usted es joven, abrumado por su éxito.
You are young, overwhelmed by your success.
— El espíritu de la colmena (1973)
He is confident of his success.
Nosotros creemos que el motivo de su éxito fué el trabajo duro.
We believe that the reason for their success was hard work.