IME over years, when you're talking about doing something your actually doing it is thwarted. I've noticed that that both with myself and with others.

Keeping mum and going about it privately, then sharing it when done, seems to have much higher success rates.

I've tried to reason through it in many different ways: talking about it satisfies you and you don't seek satisfaction from the actual implementation of the idea; talking about it "dissipates the energy"; and a number of other attempts at explanation.

But beyond explanations, the anecdata seems to suggest that doing much precede talking about. Even when you're developing something (say, software) in public, first you do then you talk about it in the commit message.

This seems to parallel the old dictum that ideas are easy, while working to realize them is the actually hard part. Who'd have thought.