Although paradoxically, it's best if you don't think while you are doing it! Not always an easy thing to do.
I did this a few weeks ago in an idle moment, mind in neutral, just enjoying the feel of pen on paper.
Looking at it today, I interpret it as an image of how tlie world felt just then.. pretty convoluted. Is that little dot out on the right hand side me, looking at it all, or is that me in the line flying off the page - trying to escape perhaps? Or am I in the middle of that dark tangle surrounded on all sides by barriers and chaos? I wonder if all those spots could be viruses.
And where's 'normal'?
You may be relieved to know I feel much calmer now, maybe because, as well as being fun, this was kind of therapeutic....