Well, one of benefits of writing is that you can create something that you would like to read.
So, ask your self - what is it that I like? When you figure it out, start working on it.
Or, you could just open the newspaper and go through the news. There are plenty of murders, rapeing, bank robberies, ilness...
So you could write about someone struggling with leukemia or cancer. You can write about victims of rapeing.
Read more books, that will give you the inspiration too. I sometimes find it by watching movies or music videos.
Hope I helped, good luck!