That's what I try to do every day, exercise creativity. It's like any other exercise I would guess (although you don't often find me in a gym so I'm speculating here) you have to keep working everyday to grow.
This school year I am teaching art once again which has given me ample opportunity to be creative on a daily basis although it's been my decision to draw, paint and photograph every day. I have found that the school district doesn't impose any requirement for an art teacher to be an artist which is strange I think. Would you take guitar lessons from someone who wasn't a guitar player? Just as you have to be a practicing writer to teach writing, it's essential to be a practicing artist to teach art. I refer to myself as an Artist/Educator actually to remind myself and announce to others that I'm an artist who educates. The distinction might not seem like much to some, but it's important to me.
If you want to see some of my creative work, here are a few places to look:
https://blogs.svvsd.org/slickart/ This is my classroom blog, so you'll find picture of student work alongside my own visual art from time to time.
http://www.kevinslick.com On the page of photos and artwork you'll find a selection of my artwork, both recent and ancient
http://www.youtube.com/user/kgslick50 My YouTube channel features videos of student work, plus my own visual art and some music videos from myself or my band Steel Pennies.