1. looking back to an idealized memory of the past
better back in my/the day
This phrase is usually used by an older person speaking to much younger people about how things were in the past. This phrase is a substitution for 'when I was young' or 'when I was in my prime.' It can be used to complain or show regret for how things have changed since a time in the past. It could be used in social or professional situations: "Back in my day, we all walked to school." "Back in my day workers would stay in the office for as long as it took to get the project finished."