1. Ship now, ship often
2. Strive for perfection
The first one is required for entrepreneurs. Your "work <--> reward" iteration cycle should be as short as possible, and should end with the customer handing you money.
The second one is a skill that rewards knowledge acquisition, and can be especially helpful for those looking to improve their skillset in order to move up the career ladder. It's also an iteration cycle, but the reward often doesn't end with directly delivering value to a customer.
Lastly, I think that startup media (Tech Crunch, YC, etc) has a lot to do with this. There are way fewer stories told about bootstrapping something long term, compared to stories about successful startups hitting home runs. The reality is that the bulk of the work will be after you launch, and will likely require continuing effort in the form of years rather than months.