Resiliencia means "resilience": the ability to recover, endure hardship, and keep moving forward. It is an especially valuable Spanish word because it describes emotional strength in a single, memorable term.
In the song, Boza calls resilience the quality of someone who faces their fate head-on instead of running from it. He connects it to using a smile as an "anesthetic" for pain, making the word a powerful image of healing after heartbreak.
"Desapego" means detachment, and that one word is the whole plot. Panamanian artist Boza sings to someone who was good for him on paper. He calls her "to' lo que está bien" (everything that is right), then admits they were hurting each other. His complaint is sharp: "Confundiste apego con querer" (You confused attachment with love). Still, he gives her credit, because she taught him how to love. The chorus flips that into a plea: "enséñame a olvidarte" (teach me to forget you), since he cannot manage it and knows that is not normal.
The verses are funny and a bit bleak. He waits in line to see a psychologist and walks out worse than he went in. Then he leans on a chemistry joke: they lost their "química" (chemistry), but "la ciencia fue la voz de mi conciencia" (science was the voice of my conscience). He smiles through the pain "como anestesia" (like anesthesia). Later he gets cheeky, promising a "regalito" (little gift) to make her "caer pa' atrás" (fall over backwards, slang for being shocked), while he stays "tranquilito" (nice and calm) and works on himself.
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