So what is the worst that could happen?

No matter what decision you make regarding your venture or business, it is very unlikely this will be the outcome!
I keep talking to people who are on the edge, the verge of doing something meaningful, but they can't quite make it over the "What if" hump.  This is the stumbling block that keeps us locked away in our version of security doing something that is less than art.  I struggled with this myself, and still need to fight this demon on a regular basis, as that little voice keeps whispering to me to find something secure with a pay cheque and stay there in the safety of the corporate cocoon.  I find the demon easier to fight now that I accept it as part of me, let it speak and then move forward.
It takes courage for the first leap, but everyone afterwards gets a little easier.
Ask yourself what is the worst that could happen and if you are honest you will find the answer rather amusing and not very scary at all.