"Poetry is the spontaneous overflow of powerful emotions recollected in tranquility."
this is what great poets do. Follow Sir William Wordsworth. But, you have woven a beautiful meaning of poetry to many amateur poets out there.
You vision was clear, to provide this as a guide, as it was indeed a wonderful guide. As many others said, you have a problem with the rhyming scheme, but in this poem, you have overcome that and strung the verses in a simple A A B B scheme. Normally you write very long poems. This either happens because one drifts away in their own world, or they have too much to say. But here, you have put everything you wanted to convey in a nut-shell. So, there it is, improvement in your technique of writing!
The Impact of the poem is best when the beginning and the ending are catchy and original which allows the reader to get very interested in the poem. And of course, the flow, for the reader shouldn't be able to take his eyes off the line he's reading. Your poem has a wonderful flow. But the beginning, i should say is a little bit cliche for this subject. So improvement in originality there, would be advised. Now, a poem is successful, when readers remember a few verses from it. So i can say this poem did what it had to do as some verses are never forgettable. And so is the conclusion making anyone pick up a pen immediately after reading this. The true aim of writing a poem, the ease in writing it, the way you should write it and that anyone can write it, is beautifully conveyed.
Good Job Mike!
And sorry for the very long critique!