Restless people stay unsatisfied underachievers; as soon as they achieve a modicum of success at anything, they get bored and start looking around.
To be truly successful, not only does one need to be innovative and bold and flamboyant but also sometimes persistent and dogged; having the will to do the most mundane things in the world, to get to the top. As we learn soberingly, the most talented aren't necessarily the most successful, and genius is overrated in comparison to will.
The path to success doesn't end with designing the first stone but by relentless laying of the same stone through the entire path.
And retroconsequently, there are those who promise so much, yet deliver so little, leaving us with only the thought of what they could have done with a little less genius and a little more stability. Am reminded of one such man:
"I'm too much of an erratic, moody baby! I don't have the passion anymore, and so remember, it's better to burn out than to fade away."