What is perfection? It is defined as: "the condition, state, or quality of being free or as free as possible from all flaws or defects." The "as free as possible from flaws and defects" makes us think we can attain it. Can we really? With advances in knowledge and technology, that which was impossible has now been possible. This has always been and always will be the case. The older we get, the more we realize it. That which was seen as impossible when were young is common place today.
Vince Lombardi's message, to me is that, although we can't obtain perfection in the purest sense, we should strive for it in everything we do. Good enough is not good enough. Be like a student and strive for the "A" rather than the "C". 93% isn't perfect but it is, still, an excellent A.
You are capable of great things. It won't happen without you doing your very best.