I am obsessed with this talk by Tina Roth Eisenberg, the founder of Tattly and Creative Mornings. Her story is a beacon of having kids making you better at work and life.
I love her emphasis on play and fun. I can get too serious and driven, so have been actively working on being more playful. (Even that sounds not fun - help!)
She adds little bits of unexpected joy all throughout her product and company: The ability to sort her site by 'rainbow'. A costume box, so you can dress as a viking before getting on that tough vendor call. And, my favorite - a confetti drawer, so you are always ready to celebrate. (I immediately ordered a box of confetti after watching.)
How can you steal a bit of your kid's mojo to make your (and your customers') non-kid time more fun?