Breakdown of Ponekad si moraš ugoditi.
ponekad
sometimes
morati
must
si
oneself (dative short)
ugoditi
to indulge
Questions & Answers about Ponekad si moraš ugoditi.
Why do we use si instead of se here?
The verb ugoditi (to please, accommodate, or indulge) requires the dative case to indicate the person being pleased. Because you are pleasing yourself, you must use the dative reflexive pronoun si rather than the accusative se.
Could I leave out si and just say Ponekad moraš ugoditi?
You could, but it sounds incomplete out of context. The verb ugoditi strongly expects a receiver (who are you indulging?). By adding the benefactive dative si, you explicitly state that you are doing this nice thing for yourself.
Why is si placed before the conjugated verb moraš?
The word si is a clitic, which means it strictly follows the second-position rule in Croatian. Since the adverb Ponekad takes up the first spot in the sentence, the clitic si must immediately follow it, pushing the verb moraš to the third position.
Is ugoditi related to the adjective ugodan (pleasant)?
Yes! The adjective ugodan means pleasant or comfortable. The verb ugoditi literally means to make things pleasant for someone. Combined with the dative reflexive si, it creates the exact meaning of treating or indulging yourself.