If your heart isn’t in it, then you can’t create images that tug at people’s heart-strings. Photography is about emotion and it won’t show up in your images if you’re not happy with what you're doing. So, if you're unhappy, kick back for a day and first figure out if the issue is long term or short term. Then, go to work on what it's going to take to get you back on track.
Sometimes you just need a break to smell the roses and other times it's more complex, but either way you've got to fix the problem.