Defragmenting the brain

Sometimes I wonder where those thoughts come from in the middle of the night. But mostly I wonder what happened to them when I fail to write them down. Sure I get bursts of creativity at other times during the day but it seems some of the more innovative, riskier ones, they often seep into my cranium when not bombarded by multiple conversations, the phone ringing and knowing I am late with a project or to a meeting. It would seem the less cluttered mind that has the widest venue in which to work. So I suppose the object here would be to try to figure out how to clear the mind at will and then let what floods in take root and grow.