Atesorar is a beautiful verb that means "to treasure" or "to cherish". It's derived from the noun tesoro, which means "treasure", so it literally means to treat something like a treasure.
In the song, Gaby Moreno sings "Hoy es todo lo que tengo / Y lo voy a atesorar" (Today is all I have / And I'm going to treasure it). She uses this word to express a deep appreciation for the present moment, highlighting a powerful and mindful message within the lyrics.
Listen to how Gaby Moreno tackles fear in this track. Instead of pretending doubts do not exist, she walks forward “con mis temores, ilusiones y los restos del ayer” ("with my fears, hopes, and the remains of yesterday"). The song is about standing tall in where you are right now. She makes a firm choice to cherish today (“hoy es todo lo que tengo y lo voy a atesorar” ["today is all I have and I will treasure it"]) while holding hands with someone alongside her: “yo de tu mano, tú de la mía, no hay nada que temer” ("me holding your hand, you holding mine, there is nothing to fear").
The title plays on her home country Guatemala and the word metamorphosis, and the chorus bursts open with that feeling of rooted joy: “Y río y bailo, está en mis venas, y libre sueño: yo pertenezco aquí” ("And I laugh and dance, it's in my veins, and freely dream: I belong here"). When she sings “ser feliz que es el remedio que todo lo puede mejorar” ("being happy is the medicine that can fix everything"), she treats joy not as an accident, but as a practical tool to shine light forward and keep moving all the way to the finish line.