If you are having trouble writing the start of your next story -or maybe you don't know where to go with your current one- look around you. Life is full of inspiration. Did you recently go through a bad break up? Use that. Did something great happen at school? There you go!
The point is, if you really pay attention to what is around you there is inspiration. They key is to search it out.
For example, when I grew up in Arkansas, my grandparents live in this tiny little blue house on the corner of the street. To this day, I pretty much always find a way to use that very house in my stories.
Your life can be the most inspirational thing if you look close enough.