Analysis of How come

How come I let it go?
For all the way I overlook,  it comes either in the glow or it often comes through the breeze,
It reminds me the far reaching promise.

While in the drowsiness when I close my eyes it again comes liting the lamp with the fringes of a wonderful light.
How come I let it go?

Instead my repeated rejection of its submission,  it cares me not, it looks back and ask me,
" Hey! Can't you remember any?
Are you all out of memory?
Look at the lamp has cast your imagery. "