I want to write a story this holiday, a sad one and touching one but i don't know how to start the story. Any suggestions?

In writing a story, you need to have a topic or the theme of the story you want to write. In this case, you are already set to write a sad and touching story. The next thing you are going to do is to choose what exact sad story are you going to write on. Is it a family sad story, couple sad story or anything else. If you have a choice, conceptualize the elements of the story, the characters, the settings and the plot. Make sure to create a concrete character of the protagonist and the antagonist in the story. If you already have enough of this ideas, you may start writing your story.