en sí mismos

themselves

→ en
phrase Rare #44,588
themselves Used for a group of males or mixed-gender groups. Often appears with verbs like creer en and pensar en, where it can mean 'in themselves' or 'themselves' depending on context.
SP: A veces, los estudiantes no creen en sí mismos.
EN: Sometimes, students don't believe in themselves.

Solo creemos en los que creen en sí mismos.

We only believe in those who believe in themselves.

Creo que algunos niños no han aprendido a creer en sí mismos.

I think some children haven't learned to believe in themselves.

— ¡Que te den profe! (2013)

Deben tener confianza en sí mismos.

They must have confidence in themselves.

El problema es que ellos solo piensan en sí mismos.

The problem is that they only think about themselves.