Most often, the reason something is "on your mind" is that you want it to be different than it currently is, and yet:
More quotes by David Allen
Your conscious mind, like the computer screen, is a focusing tool, not a storage place.
If you're waiting to have good ideas before you have any ideas, you won't have many ideas.
Attribution
Quote text and notes from Wikiquote: David Allen (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.