Past is always being Past

Someone is knockin' my door
I wake up and wear my glasses
Hurry before that "someone" leavin'
I throw my blanket to the right sides
Sitting in the border of my bed to make my hair right
But I remember that "someone" who knocked my door waitin'
Walking slowly then I reach the knock
I open the door, but can you believe me?
There's no one

          I don't understand
          Few minutes ago, I did hear someone was knocked my door
          Till I realize that isn't real someone
          That was the past who knockin' my door
          I got it, the past just tell me to forget that past
          In the other words, past is just a past
          How many times it comes
          You wouldn't make it twice or even see it twice
          Past is about somethin' you should leave
          You can't go back in "that" time
          Realize that future is brighten than past
          Movin' on to make a new step
          Brand new world you make it ^^