You don't choose your passions; your passions choose you.
Go to bed early and wake up early. The morning hours are good.
Good ideas will always get funded, so that's not going to be a problem. But you will see that it will be harder and harder for bad ideas to get funded.
What's dangerous is not to evolve.
I wouldn't be surprised if history records Tim Berners-Lee as the second Gutenberg.
If you don't understand the details of your business you are going to fail.