That sounds counter-productive. If you need good ideas, you better allow yourself to keep the ideas flowing (I suppose I believe there's something random about the quality of ideas, so to have a good one, you need to allow lots of 'em).
What might be interesting is to look into something called "mental contrasting": it says you shouldn't just revel in a new idea, because envisioning the outcome gives you a good part of the gratification of actually achieving it. Instead, you should still allow yourself the envisioning, but afterwards contrast that with how far you are now.
That sounds counter-productive. If you need good ideas, you better allow yourself to keep the ideas flowing (I suppose I believe there's something random about the quality of ideas, so to have a good one, you need to allow lots of 'em).
What might be interesting is to look into something called "mental contrasting": it says you shouldn't just revel in a new idea, because envisioning the outcome gives you a good part of the gratification of actually achieving it. Instead, you should still allow yourself the envisioning, but afterwards contrast that with how far you are now.