Alivianar literally means "to lighten" or "to relieve a burden." However, in Mexican Spanish, especially in a context like this song, it often takes on a more specific meaning related to improving one's financial situation or getting ahead in life.
In the lyrics, "No nací rico pero me voy a alivianar" (I wasn't born rich but I'm going to get better financially), it signifies the speaker's determination to overcome poverty and achieve success. It's an interesting word because it reflects a common aspiration and a unique cultural nuance in its usage.
This one is a list of what the climb has cost so far, and it starts by refusing to be embarrassed about where it began: "La pobreza es muy linda / Te enseña cosas que no puedes comprar" ("Poverty is really beautiful / It teaches you things money can't buy"). The credit goes straight to her parents, "Por enseñarme lo que es la humildad" ("For showing me what humility is"), and the title is Yahritza's answer to anyone asking whether the risk was worth taking: "Qué puedo perder" ("What've I got to lose").
The second verse names the one thing that was always in the room. "Nunca faltaba la lira / Mi mejor amiga para desahogar" ("The guitar was always there / My best friend to let it all out"): lira is regional Mexican slang for a guitar, so the best friend here is an instrument. The cost is stated flatly, "Varias noches sin dormir" ("Many sleepless nights") and "Tuve que sacrificar mi vida" ("I had to sacrifice my life"). Then the sibling trio from Washington State plant a flag: "Arriba la bandera pa' que sepan / Que aquí no nos damos por vencido" ("Raise the flag so they know / We don't quit around here").