Mija is a common and affectionate term of endearment, a contraction of the words mi hija (my daughter). While it literally means "my daughter", it's widely used in many Spanish-speaking cultures to lovingly address any younger woman, like a friend, partner, or family member.
In this soothing song, Ivan Cornejo uses mija to create an atmosphere of comfort and protection. He's reassuring someone he cares about, telling them, "Piénsalo, mija, tú estás bien" (Think about it, my dear, you are okay), making the message deeply personal and tender.
Ivan Cornejo wraps up with "Outro (Duérmete)", and it feels like someone sitting on the edge of your bed after a rough night. Instead of big, dramatic instrumentation, the whole track rests on a gentle, repetitive whisper: "Cierra tus ojos / Que todo va a estar bien" ("Close your eyes / Everything is going to be alright"). He acts as an anchor here, nudging you to just let go of whatever went wrong during the day and rest.
The comfort gets especially personal when he tells the listener: "Duérmete / Piénsalo, mija, tú estás bien" ("Go to sleep / Think about it, sweet girl, you are okay"). The term mija is a blend of mi (my) and hija (daughter), used widely across Mexico and the US as a warm term of endearment for a younger woman or close friend. By repeating "Tú estás bien" ("You are okay"), Cornejo turns a simple outro into a soft, steady mantra to hush racing thoughts.