you must do it
Do you really have to do it now?
Pero debes hacerlo poco a poco.
But you have to do it little by little.
You have to do it, whether you like it or not.
You have to do it yourself.
Si quieres llegar a él, así debes hacerlo.
If you want to reach him, that's what you have to do.
Debes hacerlo por tu propia cuenta.
You have to do it on your own.
Pero debes hacerlo como un vaquero, nada de montar de costado.
But you have to do it like a cowboy, no riding sideways.
— Titanic (1997)
Si quieres que algo se haga bien, debes hacerlo tú mismo.
If you want something done right, you have to do it yourself.