Estorbe comes from the verb estorbar, which means to hinder, bother, or be in the way. It's a less common word than molestar (to bother) and carries a stronger sense of obstruction.
In the song, the singer says, "Me quito del camino / Para que no te estorbe" (I'll get out of the way / So I don't hinder you). This word beautifully captures the painful self-sacrifice of someone stepping aside so their loved one can find happiness, even if it means being forgotten.
Yuridia's "Para Que Seas Feliz" is a powerful song about a selfless, yet heartbroken, decision to step aside for someone you deeply love. The singer declares, "Me quito del camino / Para que no te estorbe" [I remove myself from your path / So I don't bother you], making it clear that her absence is meant to free the other person to find everything they've ever wanted and, ultimately, "Para que seas feliz" [So that you can be happy]. It's a tough choice, but she wants them to be unburdened by their past together, saying, "Para que no te pese / Haberme conocido" [So that it doesn't weigh on you / Having known me] and "Para que te liberes / Y rompas las cadenas / Que has llevado conmigo" [So that you free yourself / And break the chains / That you've carried with me].
But even with this grand gesture, there's a poignant plea: "Nomás no se te olvide / Que de verdad te quise" [Just don't forget / That I truly loved you]. She wants him to remember the genuine love and effort she put in, and warns him not to regret her absence, because she might get tired of being his "sombra fiel" [faithful shadow] and waiting for him. It's a beautiful, bittersweet song that shows the depth of love, even when it means letting go.