Shawn Blanc on the importance of the "fun factor" in creative work (emphasis mine):
“There is something freeing about creating for yourself. When we take hold of that baton and create for that second version of ourselves, it’s like having a permission slip to do awesome work. And what better way to have fun than to do awesome work? There’s an inverse truth here as well: most of our best work comes from the place of delight. When we are excited about a project, that creative momentum propels us to think outside the box and to dream new ideas as the project takes residence as the top idea in our mind.”
He goes on to give several helpful tips and reminders for anyone who gets stuck in a creative rut. It's something we all go through sooner or later, so keep this one bookmarked.