Don't let other people distract what you're doing. There's always haters.
What we're starting to see is that the best apps tend to be the simplest, the easiest to use and the fastest to use.
I used to snowboard 30 days a year. Now its down to eight.
Stop sketching and start building.
Build something that fixes something people are having a problem with, and you're lined up for great things.
If there's something you want to build, but the tech isn't there yet, just find the closest possible way to make it happen.