Ask Professional Freelancers: How Creative are You?

Freelancers of Hacker News (specifically those of you who are freelance web designers / developers), I'm just starting out however am having issues attempting to come up with something to design for passive income, or to place in my portfolio.

Did you have a problem like this when you were first starting out, and do you still have it now?

I really want to earn a living doing freelancing and SaaS, but the fact that I can't think up a passive income application or web design right off the top of my head is really shaking my confidence.

Thanks.