For wannabe entrepreneurs ...

What it takes (a partial list):
Desire
Vision
Goals
Strategies
Plans for alternative paths of action
Ability to quickly adapt

OR, you could just try your luck! For me, it's been a mix, with more of the luck component. Because I am not doing it alone.
My partner compensated for this, by depending more on things other than luck! :)

Anyways, here's some starter ... A small check-list.