Benefactive reflexive pronoun (si)

Croatian uses the dative reflexive pronoun to express that an action is performed for your own benefit or comfort. It adds a personal nuance, indicating you are treating yourself.

The short form: si

The short dative reflexive pronoun is si. As an enclitic, it must take the second position in a sentence or clause.

Sometimes you must indulge yourself.
Ponekad si moraš ugoditi.

si is frequently used when talking about relaxing or getting something for your own enjoyment.

I will buy myself new pajamas for an undisturbed rest.
Kupit ću si novu pidžamu za neometan odmor.
I found myself excellent reading material and leaned back in the armchair.
Našla sam si odlično štivo i zavalila se u fotelju.
I brought myself snacks and leaned back on the couch.
Donijela sam si grickalice i zavalila se na kauč.

Adding si emphasizes that the action was done entirely for the subject's comfort.

The long form: sebi

The long (emphatic) dative form is sebi. Use sebi to emphasize that you are doing something for yourself as opposed to someone else.

I finally indulged myself, and not others.
Konačno sam ugodio sebi, a ne drugima.
I will prepare tea for myself alone.
Sama ću sebi pripremiti čaj.

Unlike the short form, sebi is not an enclitic and can be placed freely in the sentence for emphasis.