Children are naturally creative. Watch them at play. What do they do? They use their imagination. They giggle. They have fun. They play games.
Got writer's block? Before writing, try this: Act like a kid. Get down on the floor with your 4-year-old and have a tickling contest. Play dress-ups with your grandkids. Share knock-knock jokes with your tween.
If you don't happen to have any children around, think of something playful to do. Stand on your head. Call someone up and share a hilarious joke. Play Chopsticks on the piano. Pat your head while rubbing your tummy.
Do something...anything to loosen up. You'll be amazed at how much more creative your writing will be after this exercise of acting like a kid.