What does Esperanza promise herself?

In this chapter, Esmeralda describes her longing for a house like the ones where her father gardens. On Sundays her family drives by and gazes as these houses, but her newfound sense of shame prevents Esmeralda from joining them. Esmeralda vows that when she owns her own house, she will not forget from where she came. She will let bums live in her attic, because she knows how it feels to not have a house.