You don’t know if your idea is any good the moment it’s created. Neither does anyone else. The most you can hope for is a strong gut feeling that it is. And trusting your feelings is not as easy as the optimists say it is. There’s a reason why feelings scare us.
And asking close friends never works quite as well as you hope, either. It’s not that they deliberately want to be unhelpful. It’s just they don’t know your world one millionth as well as you know your world, no matter how hard they try, no matter how hard you try to explain.~ Jason Korman from, https://www.gapingvoid.com/content/uploads/assets/Moveable_Type/archives/000888.html
There are so many ideas that can be tried. But knowing which ones to try, which ones to stick with, and which ones to stick with beyond the point of sanity is the hard point. It’s important to find a balance between some things which are fulfilling and a sure-thing, and some things which are inspiring and impossible.