Find a Way to Have Fun in Your Writing
Find a way to have fun with what you're writing. If you don't, not only will it be a miserable experience, the product will lack the energy, playfulness, and good feeling it needs to be successful. Change your point of view, experiment, try something different -- until the routine becomes an exploration, and the monotonous becomes your musing.
If that doesn't work, try reading a few lolcats to lighten things up.