There is this thing about intelligent people that they struggle with. Because they always seem to know everything and are equipped with much knowledge, unfortunately, this is also their undoing. Intelligent people know too much that taking action becomes a big issue, they would want to get everything right before taking action and more than often, they won't.
While intelligent people spend time analyzing and overthinking what they plan to do, "unintelligent" people on the other hand spend little time analyzing, once they see some potential in what they want to do, that's it for them.
Intelligent people have this unending learning loop, they just keep learning and learning
Although some may argue that luck plays an important role, then, luck will only come your way if you're at least out there doing something, luck doesn't work for thoughts but actions.y
Intelligent people always want to get things right before launching, you can call that pride. They can't just afford to go for the basics.
They tend to put many variables into consideration before taking action, they try to sieve out all odds, while unintelligent people will take steps despite the obvious odds.
Conclusion
Intelligent people don't have the knowledge problem, they only lack the courage to make it happen.
There's a thin line between intelligent people and success, and once they cross that line, it all becomes an easy ride henceforth for them but first, they must cross that line and the line is is what Nike described as JUST DO IT.