Well, really good writing has to come from within. Write about your own life experiences. Is there a situation you have been in, an experience you have had that you can write about. It doesn't have to be anything great - in fact everyday experiences sometimes make the best short stories because it is something everyone can relate to and learn from. What is in your background - what have you studied? This also can help you come up with ideas. For example, if you have worked in business, write about a discussion around the water cooler that can be sad, funny, something all can relate to. Write about a company party, what happened, what did you discover, did it make you change how you saw yourself or someone else? Just a simple walk in the woods can conjure up ideas for a story. While Copper man has given you a google plot generator that type of generating ideas can be very contrived. The best writing is inspired by what is inside you, the life lessons you have learned along the way, the great joys you have experienced and the depressing lows you have suffered. Writing is not easy and doesn't come quickly. It takes a while to hone your skills, but a good hard look inside yourself is what is required to write.