Your best ideas tend to come when you least expect it

Nothing like a nighttime stroll to give you ideas. ~J.K. Rowling, "The Egg and The Eye," Harry Potter and the Goblet of Fire, 2000, spoken by the character Mad-Eye Moody

Your best ideas tend to come when you least expect it.  As such, it's always wise to keep a notepad or other means of recording your thoughts before you forget.  Often a moment of brilliance will glow brightly but only for a moment.  You're deceiving yourself in believing you'll be able to recall the details later.  Like a wonderful sunset the most brilliant of ideas will fade from your memory more quickly than the sun vanishes from the sky.  Relaxation may help you recall your thoughts or come up with superior ones.  The best ideas that are not acted upon are equal to no ideas at all.