They're bold enough to punch through unendorsed aversions, they're not afraid to make fools of themselves, they don't procrastinate, they actually try stuff out, and they push on without getting easily discouraged.

For what it's worth, I'm a pretty successful entrepreneur and I'd say this more like:

They manage on the whole to punch through many of their unendorsed aversions (at least the big ones that look like they're getting in the way), they're just as afraid to make fools of themselves as you are but they have ways of making themselves act anyway most of the time, they keep their procrastination under control and manage to spend most of their time working, they actually try stuff out, and they have ways to push through their discouragement when it strikes.

(Your version scans better.)

I'm commenting mostly against a characterisation of this stuff being easy for successful entrepreneurs. If you try something entrepreneurial and find that it's hard, that's not very useful information and it doesn't mean that you're not one of the elect and should give up - it's bloody hard for many successful people, but you can keep working on your own systems until they work (if you try to just keep working I think you'll fail - go meta and work on both what's not working to make it work better and on what is working to get more of it).