Determintation To Write!!!

Last night, I found out that... you'll never guess what! The author of the book I was reading wrote her first 'novel' when she was NINE! The same age I am right now! If you know me, you probably already know that I want to become an author when I'm older! So you know what I'm doing? I'm writing and writing and writing! I even told my mom about it, you probably know her blog, NO DOORS. It's awesome. You should totally read it, though I don't. Anyway, the problem for me is, I LOVE CREATING STORIES, READING, WRITING, AND STARTING THEM. But... I HATE FINISHING THEM! That's a great problem, right? I can only write short stories. One problem... again! I don't like planning my story, so I just start them and write, then save them, then lose them on the computer, and forget about them! Then I start a new one. I don't even remember ONE FORTH of the stories I've lost on this computer! Weird, right? But I REALLY NEED ADVICE! So can you please comment some pieces of advice for this? please? Thank you. Here's one weird, short story...

THE SOLID GOLD PYRAMID

Alyssa quickly slipped out the backdoor and ran down the street to her friend, Mandy's house. The sun was just rising, and nobody in town but her and Mandy were awake. "Hey, Mandy!" Alyssa called softly as she reached Mandy's house. She was sitting on the porch looking bored. "Ready for the expedition?" "Yeah!" Mandy's eyes started shining, and she followed Alyssa out to the town's park. They were scouting around when suddenly Alyssa saw a tiger rush about in the trees. "I have to check something out, Mandy, okay?" She said, turning to follow the tiger. "See you soon!" Alyssa ran to catch up with the tiger, and disappeared into the trees. Suddenly she was in a jungle, following a fierce tiger that eats meat and putting her life on the edge. Then a glimmer caught her eye. Alyssa was brave and was never afraid, and she knew she wasn't going to get to that glimmer in time, so she hopped onto the tiger, got it under control, and made it run really fast to the glimmer. When they arrived, Alyssa saw that the glimmer was a pyramid! Not just a REGULAR PYRAMID, a solid gold pyramid! Alyssa gasped in amazement. "Alyssa!" A voice called. Suddenly Alyssa was back in the park, hunched down and staring at the trees. "The expedition's over. Time to go home!" Mandy took Alyssa to her house and that was the end of the pyramid.

THE END.

hope you liked it! Tell me how to improve it, please! thanks! Bye!