I have had enormous problems with time management my whole life. I can remember having great difficulty even learning how to tell time as a young girl. I'm also a terrible procrastinator and have been for as long as I can remember. For reference, I am an undiagnosed Aspie, likely with undiagnosed NLD as well.
I frequently misjudge how long it will take for me to get ready and to arrive at appointments on time, ensuring that I unintentionally arrive 5-15 minutes late to everything. It doesn't help that I live out in the country, at least 30-45 minutes away from most places I need to go. I even manage to arrive late to things that I wouldn't ever want to be late for, such as doctor appointments or concerts. However, I do dread arriving early to anything requiring socializing, which could lead to extra small talk. So I strive to arrive exactly on time, but invariably I always end up late anyway.
I have been told on occasion that being even 5 minutes late is a sign of disrespect and is considered very rude. I maintain that it is much ruder to show up early, when folks aren't prepared for your arrival yet, then it is to arrive slightly late when you are already expected. To each their own I guess. I never intend to be rude or disrespectful when I end up late. I never intend to be late at all, I just try not to be early. And achieving my goal of being exactly on time seems ever elusive.
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"You have your way. I have my way. As for the right way, the correct way, and the only way, it does not exist."
-- Friedrich Nietzsche