with himself
No sea tan duro consigo mismo, todos cometemos errores a veces.
Don't be so hard on yourself, we all make mistakes sometimes.
No hay lugar para el odio en un corazón que quiere estar en paz consigo mismo.
There is no room for hatred in a heart that wants to be at peace with itself.
El amo está muy disgustado consigo mismo.
The master is very upset with himself.
— Ágora: La caída del imperio romano (2009)
El anciano a veces habla consigo mismo.
The old man sometimes talks to himself.
He talked to himself.
No es nada exigente consigo mismo.
He isn't demanding of himself at all.
Así que es capaz de ser irónico consigo mismo también.
So he’s capable of being ironic about himself too.
— Fresas salvajes (1957)