Ask HN: How do you think about your startup idea?

Hi all. I was just starting to make experiment, and here is my latest lesson learned http://wilbertliu.com/lesson-learned-from-bullets-passion

You know, startup is not easy (i won't say it is hard to discourage people) and i thought about ideas in the morning, in my free time, a lot, a lot, and a lot.

But you know, i am stuck right now. Would you mind if you share how do you think about your startup idea until you can say "Aha, i will do this passionately" and turn it to be the real product that people want?

Any discussion would be really appreciated! Thank you so much.