A lot of people seem to like this poem, and I can see why, because it's full of zest and exuberance. What I find problematic with it is, firstly, its length. It needs to be shorter and cut straight to the chase of the argument. Ruthless paring down can only make your writing tighter and make the words' impact more deeply felt.
Which may also expose another flaw in this poem. It seems to be a case of style over substance: your jaunty rhyme scheme does little to hide the superficiality of your content. The whole "look at me, I'm so totally committed to the pursuit of happiness" thing gets a bit wearing and the poem starts to become monotonous, as if we're waiting for some new conflict to emerge. It starts out funny, but one can only tolerate it for so long!
