Past (even yesterday) is history,it is, but why does one's past keep returning (after certain intervals)? Why can't it remain where it was left? Why does it follow you some secs, mins, hours, days, weeks, months, years later?
It is said that Past is best left in the past. I believe in the same too but at times past returns with a force that the sheer force of it knocks you down. You have washed your hands of it, you want to forget it, you don't want anything to do with it yet it won't leave you!
To live happily in the present("a gift") one should forget one's past ("history"), not wonder of one's tomorrow ("mystery") but no matter we can't help thinking of our tomorrow(s) and our history(s).
So I guess our past, present and future are all interlinked and as much as we try to break the link we can't(the link is much stronger)!.
So relive the 'Past', mix it together 'Today' and take it forward to a new 'Tomorrow!'???
N.B: The work of my "ever thinking" mind!( :-) )