Challenge - take a camera that you can use in your sleep, no need to figure things out, just shoot - but shoot in RAW and Manual so you are the one setting the camera, not the camera electronics.
Go for a walk someplace, anyplace, but instead of looking where you’re going, look to both sides, up above you, anywhere and everywhere, looking for things you normally pay no attention to whatever. For every potentially interesting thing you see, use whatever you know about photography to get the best possible photo of it, and as you’re shooting, change your viewpoint, whatever, until you’ve got the best possible view of it. If it’s a garbage dump or a construction sight, just do your best to capture what you see. Then move on and look for the next possible scene.
When you get home, try to create the best possible image from what you’ve captured, even if it’s a completely worthless shot, not worth having even been photographed.
Do this for a week, or a month, or whatever, until something in your brain makes you aware of potentially fascinating scenes that you were about to walk by, and ignore.
…of course, perhaps everyone in this forum is going to look at the above photo, and wonder why anyone would be silly or stupid enough to bother to even take a photo. So be it. But maybe, your brain will see something that you never recognized as being worth a photo, but turns out to be “art”. 
…oh, and read anything and everything that has been posted about abstract photography, even if you’re like me, and know you can’t do it. Do it anyway.
