“He who can does; he who cannot, teaches.” - George Bernard Shaw.

Why is this relevant to your idea (and its success)?

Let’s use “talking about” for “teaching” and “implementing” for “doing”.

Implementing your idea will help you get experience, learn what works, and actually make it happen.

Talking about your idea will help you know it better.

“The person who says he knows what he thinks but cannot express it usually does not know what he thinks.” — Mortimer Adler

The best way to talk about your idea is to “teach” it to others. You’ll benefit from this in two ways:

By talking about it, even before you get any concrete feedback, you will discover both new weak and strong points about your idea.

The feedback you get will show you new points of view on your idea.

For your success, teaching is as valuable (and much less expensive in both time and money) as doing.

So before you go “do” your idea, you should “teach” it to others. Rephrasing the quote above: “Those who can, teach, then do.”