There are a few things that I've learned as I've gotten older. Most of these things are common sense, but there are some lessons that only come with maturity. I can try and pass them on to you now, but you are more likely to learn them as time passes. I come from a long line of pack-rats. I won't call myself a hoarder, but I do know that the potential is there. I get sucked into watching the TV shows about hoarders and I've learned a few things. I'm hoping that knowledge is power and that I'll be conscious and aware enough to prevent a full-out addiction.
One of the common personality traits among hoarders is the fact that they think of themselves as collectors. They develop emotional attachments to things and therefore find it difficult to let go of their stuff. They hold onto items so they don't forget the memory that's attached to it. With any collection, the more you have the more valuable it becomes. But in the end... it's all just stuff... things. Don't get emotionally attached to things.
You can collect memories and not things. You can collect experiences and not things. Be a collector of knowledge instead. If something is so important that you want a trigger, write about it in a journal or take a photograph. (Warning: Don't think you can just collect photos either. That's a whole other hoarding issue.) Value what you do, where you go, who you love instead of what money can buy. You'll be much happier and more wealthy than you could ever imagine.