homesickness(missing one's home or family) noun [UK: ˈhəʊm.sɪk.nəs] [US: ˈhoʊm.sɪk.nəs]
nostalgia(bittersweet yearning for the things of the past) noun [UK: nɒ.ˈstæl.dʒə] [US: nɒ.ˈstæl.dʒə]Don't let nostalgia get the best of you. = No te dejes vencer por la nostalgia.