> "Another part is 'Should I be doing this?'"
Absolutely. I intentionally alluded to this but didn't enter into that discussion because I didn't want to draw from the point I was making, but it's just as valuable of a discussion to have.
> "Is my optimum potential competitive against my peers?"
I would say that your peers could only reasonably be defined as those people who have the same upper-bound of potential (optimum potential) as you. I'm not in the same optimum potential league as John Resig; both because I haven't worked as hard as he has up to this point (focused in the right areas) and because I don't have the same optimum potential (I would imagine). He and I are not peers in this sense, despite being peers across many other areas.
But if I interpreted the question of my success in terms of my self or my peers through the filter of that fact, I would do myself a great disservice. I can't live the life where he and I are peers and I can make changes in my life to compete with him. I can live in the life where I can make changes in my life that will affect my success compared to people in the same optimum potential as I am.
Besides that, despite the differences in optimum potential, I may still be able to reach the level he is at now after, say, twice as much work. In other words, his level is not unobtainable for me, I just have a lot further to run in the race.
And I, for one, welcome that challenge. Anyway, great point, thanks for making it!