Dear future hubster,
The older I get, the more I hear, and, much worse, the more I say "those were the days". But then the more I say it the more I know that although this statement carries a certain proportion of truth, it is not entirely correct. Especially the implication that compares "those" days to "these", suggesting that "these" are not the days.
And that is so wrong. These are the days, dear future hubster. These are the days we're living, these are the days to make ridiculous mistakes and achieve great goals.
These are the days that are never coming back; they will only become "those" days.