drop off(to fall asleep) verb [UK: drɒp ɒf] [US: ˈdrɑːp ˈɒf]
fall asleep(to pass into sleep) verb [UK: fɔːl ə.ˈsliːp] [US: ˈfɑːl ə.ˈsliːp]
dormirse en los laureles verb
rest on one's laurels(rely on a past success instead of trying to improve oneself further) verb [UK: rest ɒn wʌnz ˈlɒ.rəlz] [US: ˈrest ɑːn wʌnz ˈlɔː.rəlz]