conciliar

To reconcile — differing views, interests, or schedules (conciliar la vida laboral y familiar), and in law, to mediate a settlement between parties (conciliar un conflicto). The set phrase conciliar el sueño ("to manage to fall asleep") is extremely common in everyday speech.

• Es difícil conciliar el trabajo y la familia. — It's hard to reconcile work and family life.
• No logré conciliar el sueño anoche. — I couldn't get to sleep last night.
• Las partes conciliaron sus diferencias en la mediación. — The parties reconciled their differences in mediation.

Learners often default to dormir for "to fall asleep," missing that conciliar el sueño is the specific, very common phrase for successfully getting to sleep (especially after difficulty).

• expression "Conciliar el sueño" — A very common fixed expression meaning to manage to fall asleep — used constantly in everyday speech and in medical/health contexts (no poder conciliar el sueño, "to be unable to fall asleep").