Head and Heart: How to get out of a September slump

We're already nine months into the year, so you might be looking at your goals and new year's resolutions and thinking they need a spring clean. The year started strong, you got through winter, but now you're feeling a bit tired and the end of the year seems still so far away.So if you are feeling like you've hit a bit of a September slump, how do you motivate yourself to push through?