Bring it into focus

Now that the attention isn't being held so tightly, you can see impermanence more clearly. What is stable? Is it the thoughts, efforts, desires, worries, the happiness? Which one of these things has staying power. Do they not all come in for a brief amount of time then fade?
Before I tried to control things because I thought that negativity should be cast out. But, all that lead to was increased stress due to the fact of  trying and pushing. That doesn't sound like flow does it?
The next part I wonder if can be put into words. Trying to get rid of the bad just made me focus on it. In other words, making it special in some way, worthy of focus, and thus picking it up , meddling and claiming it to be mine. For example, I begin to worry about something. I then don't like it, and then want it not to return or perhaps devise a way for me not to worry any more. You can see from all that the importance put on negativity.
The question is, why pick it up at all? Why not just keep moving on? You don't need to base your life around it or do anything with it. It's just something that will inevitably just come and go. Negative and positive are two things that happen with the same characteristics, fleeting and out of control.