lo que debo hacer

what I must do

→ lo

phrase Common #6,371

what I must do Refers to the action the speaker is obligated or feels obliged to take. Depending on context, it can also mean “what I should do.”

SP: No estoy seguro de lo que debo hacer.

EN: I'm not sure what I should do.

I’m doing what I’m supposed to do.

Tell me what I should do.

Always telling me what I should do.

— Haz lo que debas (1989)

He has to tell me what I should do.

— Reservoir Dogs (1992)

I do what I have to do.

I always feel what I should do.

— La doble vida de Verónica (1991)

I know what I have to do.

Now I know what I must do.

I have no idea what I’m supposed to do.

I know what I must do.

That's what I have to do.

I just think it's what I have to do.

I do what I must do to defend Greece.

I will do what I must do.

I have believed only in what I must do, in what a person must do.

— El imperio de las sombras (2016)

Then I know what I must do.

— El señor de los anillos: La comunidad del anillo (2001)

I know what I have to do, Sam.

— El señor de los anillos: Las dos torres (2002)