Got a new idea?
Chew on it for awhile. Do not over think it.
What's the difference? Chewing on it like a piece of hide is easy and satisfying like brainstorming, you just let anything that pops into you head be there. It is creative. Over thinking is inserting thoughts in that can create barriers to allowing creativity to flow. Over thinking involves words and thoughts like "what if", "that would be impossible", "sounds silly" or wondering what and how the world outside you might interact with your idea.