Sgretola means "crumbles" or "disintegrates". It's a vivid and somewhat dramatic verb that you don't encounter in everyday conversation as often as more common words.
In the song, Ultimo uses this powerful word to describe his mental state: "Il mio equilibrio mentale si sgretola solo" (My mental balance just crumbles). It perfectly conveys a feeling of profound emotional fragility and loss of control, making it a memorable and impactful word in the context of the lyrics.
Picture a single piano filling a quiet room while Ultimo sings Equilibrio Mentale - Home Piano Session. He stacks vivid metaphors: a droplet clinging to a railing, train tracks waiting for a diverted train, brakes that cannot stop, to show how fragile he feels after a love has slipped away. His mantra "Dammi la tua mano" (Give me your hand) turns the performance into an earnest request for rescue, revealing a mind tipping out of balance as dreams he once "sweated for" seem doomed to fade.
Still, between the cracks of doubt, small lights appear. Even as he wakes from strange dreams to cigarettes and airplanes overhead, Ultimo keeps spotting hope "da lontano." The song reminds us that confessing weakness can be an act of strength: by naming our fears, asking for guidance, and following the faint glow on the horizon, we begin rebuilding the mental equilibrium we thought we had lost.