Rep Power: 0

For a while now I've had cracked paint on my trunk... over the past year or so it's started pealing and constantly getting worse! (pics attached). Anyone know a good DIY way to stop it from peeling? I'm not looking to have a perfect body, the previous owner beat it up a little so its never going to be a show car, but I would like to stop the pealing before the paint comes all the way off and I'm left with a bare spot!

Thanks!