I'm one of those perpetually late people. There was a time when I was slightly overweight. I changed my diet, started lifting weights and running, and ended up running a marathon 18 months later. But I couldn't fix my lateness. Pretty sure I had to run to the marathon starting area to be able to start with my group.

I've found that exercising control over my body is easy. The body is stupid. It does what I tell it to do. It complains, but it will only fight back when it absolutely cannot physically perform the task.

Not so much with my brain. The brain is smart. It fights back. I can look directly at a (digital) clock, and my brain can refuse to process the time on it.

I can dig around and produce piles of evidence of all the different ways I tried to fix this, all the different treatments I sought, how much sincere effort I put in, and a complete lack of results. Don't take executive function for granted.

Also, our lateness usually hurts us far more than others around us. Nothing is "too important" to be late for. And the things that usually make us late aren't generally important. Most of the time, they're complete wastes of time that didn't need to be done at all in the first place.