[13ren]

Her heroes work hard at whatever they love - it's not established why they love it, but it's established that they act on their love.

Peter Keating (the shadow or antagonist of Howard Roark in the Fountainhead, with comparable ability but different choices) provides a counter-example: he loves painting, but doesn't practice it until after many years of ("aw, hell") architecture. When he eventually does turn to it, Howard Roark gently tells him "it's too late".

Yes, her heroes' ability (brilliance) and loves (values) are already in place - but in this, they are no more gifted than anyone else. What differentiates them is their consistent choice to apply their ability to what they love, seek mentors, etc. As a personal choice, it is within their power, and does not come from their upbringing. It comes from them - as do your choices (of course, they also have many blessings and opportunities - as do you).