Vals means "waltz," a classic ballroom dance. It's a beautiful and elegant word that evokes a sense of rhythm and grace.
In the song, Diego Torres uses "vals" as a metaphor for life itself: "Que la vida viene y va como un vals" (That life comes and goes like a waltz). This imagery suggests that life has its own natural flow, with ups and downs, much like the steps of a waltz. It's a unique and poetic way to describe the journey of life.
Diego Torres builds this song around a single image: life as a waltz, "Un paso adelante" (one step forward) and "otro paso atrás" (another step back). It's a song about staying in motion through doubt and setbacks rather than being stopped by them — fear can make you hesitate before you leap, but he keeps circling back to the idea that "cada lagrima te hace más fuerte" (every tear makes you stronger).
The chorus turns that patience into a promise: "lo mejor, esta por llegar" (the best is yet to come). Instead of chasing a guarantee that things will go right, Torres frames the waltz's back-and-forth rhythm as the whole point — you keep dancing, keep changing, and the good part of the story is still ahead of you.