Founders, books and your own findings will all point to the same summary:
- Start with a vision (“Imagine if X”)
- Make a few assumptions (“I think X will happen if Y”)
- Talk to users/customers and adjust assumptions based on their feedback
- Build something to test assumptions
- Find users
- Look at metrics
- Realize 4 out 5 assumptions were wrong
- Do it again
So do it now and don’t spend too much time on any of the steps.