I've been doing this for a couple of weeks now and I hesitate to throw this one out to you because it won't lead to you writing fiction (I don't think?). But it is turning out to be so much fun I decided to let you in on my new secret writing joy.
Confession: I'm not much of a journal writer. I go through fits and spurts with it. But I like the idea of having some sort of record of my life to look back on one day. So I started trying to sum of my day in one sentence. I figured one sentence was manageable. At first they were long and crazy. Things like: I went to visit my Mum today and when I stood up from her sofa my jeans were so covered in cat hair they looked like they were made of fun fur, not denim, and when I couldn't scrape it all off with her lint brush she accused me of not knowing how to work it properly and I said "Mum, if I figure out how to write a book I think I can figure out how to work a lint brush" but she looked doubtful and I felt like I was going to explode.
But now they are getting all Zen-like and poetic. I say things like: The sunset breeze calmed me into pink happiness. (Well, actually I made that one up - but that could be today's).
Anyway, if this appeals to you, I invite you to try it. It's fun!