Everyone has a different approach to making a picture. However, the best advice we can give is to spend more time than you normally do thinking about how you are going to create your image. The most important thing is to figure out what story you want to tell. After that you can figure out the location, the pose, the outfit, down to the smallest detail like "a drop of rain on my eyebrows" with your story in mind.
Keep in mind that the stories you tell do not necessarily need to be entirely about yourself. For instance, it could be anything that comes to your mind or anything you've encountered in your daily life that has an impact on your feelings and emotions.