You have a doctor's appointment at 2:00 PM. It is 1:00 PM. You know the drive takes 30 minutes. You think, "I have 30 minutes of free time! I'll just quickly reply to this email."
Suddenly, you look at the clock. It is 1:45 PM. The 30 minutes of free time collapsed into a black hole. You scramble to find your keys, sprint to the car, hit every red light, and arrive at the doctor's office at 2:12 PM. The receptionist glares at you. You feel a familiar, crushing wave of shame. "Why do I do this every single time?"
To the outside world, chronic lateness is viewed as a severe character flaw. People assume you are arrogant, that you think your time is more valuable than theirs, or that you simply don't care.
This is a devastating misunderstanding of ADHD circuitry. A person born biologically blind cannot "try harder" to see the color red. A person with ADHD cannot "try harder" to feel time. When you sit down to write an email, your internal clock turns off entirely. You enter a state of hyperfocus where 40 minutes physically feels identical to 4 minutes. You are consistently late because you are constantly attempting to navigate a temporal world using a broken compass.