Me ! The obese slob on a bunch of pills for heart and kidney conditions and getting ready to die. All it took was to accidentally meet the person who showed me the way.
After dozens of mountain peaks climbed, thousands of km ridden on the bike and buckets of sweat left in yoga classes, I now look like a model and I have women's eyes on me each time I look around. The most beautiful too, because they know what it takes.
Radical change is possible and from what I've seen, some people just take a bit longer to wake up to their true potential.
Believing that you have what it takes is all it takes :).