The thing about starting something is that you either have a deadline and finish it or you have no deadline and have to continually reinvent yourself.
I believe this is why so many people are afraid of new stuff. New means reinvention. And reinvention means I should adapt. Few people truly like adapting.
Adaptation is necessary because it helps you thrive in changing times by changing along with them. This means, quite often, to put yourself out there with a new project or with your ideas and paying attention to what your audience talks back. If it fails, you can always try again. What if it works?
If it works, you build expectation for something, which is also frightening. The biggest risk about people expecting the unexpected from you is that you actually stop contributing with something new, thus losing momentum.
But do you really consider doing nothing a viable alternative?