I don't know if I'm missing the point here but the word "carelessly" seems misplaced. I would have chosen a noun and maybe then it could have made sense, at least from where I'm standing.
The line breaks appear to a be a little off too, particularly the first half. It is hard to follow it with pauses that sound a slightly artificial.
I liked the contents though, the idea was nice as well as the imagery. It kind of made me think of this outrageous fact that the "NOW" lasts only a second and it all too quickly becomes the past. Thus, if one wants to live solely on the present must be sharp and fast to get it otherwise it can slip between one's fingers.
I hope you don't mind some of my comments just my take on it.
Have a great day,