Here's an interesting choice that most people leave unmade:
How comfortable are you engaging in projects where there's a likelihood that you'll lose by just a hair?
What makes a project worthwhile and interesting is that it might not work. All the this-is-sure-to-work projects are taken.
Given that you're taking a risk, what kind are you up for?
Are you seeking out areas where there's no competition, true longshots where few people see you fail?
Or are you okay with the daring near misses?