Take a dream or goal in life you would die for. Write the story. That's what I did. My dream came true for me, but way later in life than I had hoped. My book "GENTLE REBELLION" is that book. It is a fluffed up, never happened memoir. It is the original dream. There is little reality in this story, but all the excitement that feeds a young man's ego.
The buzz phrase of writing is WRITE WHAT YOU KNOW. What do you know better than your dreams.
Try it. This works for articles and shorts, as well as novels.