Why is it that you look at a successful person and even if you copy all their actions, even if you copy their attitude the way they tell you, you…

Why is it that you look at a successful person and even if you copy all their actions, even if you copy their attitude the way they tell you, you won’t be able to duplicate their success? I have been slacking off growing, i.e. didn’t do much to grow, and I noticed. Not for a long time, maybe a week or two, but I have started to notice.