Nice concept of the poem and people can relate to it as they grow up.

I want do give you kudos for the first four stanza especially- I didn't even know you were rhyming until the fifth. Personally, I don't like to notice it- cause when you start to notice it, I feel it starts to become forced. This is true for several lines, mostly your second and forth lines, your first and third lines seem to rhyme quite well (all but killer and pillar which again seems to be finding words and making a line to go along with it).

Your last stanza however goes back to it being pretty discrete and that last stanza is very strong and deep and pulls the poem into that of quite a great poem!

Good job! Keep writing!