It's not okay to be late for something important.
Jane has a job interview starting in 15 minutes.
Jane wants to eat lunch.
Jane eats a sack lunch she had packed that morning in the car, taking 10 minutes to complete the meal.
Jane orders food at a sit down restaurant, taking 45 minutes to complete the meal.
Jane arrives to the interview on time and gets the job.
Jane does not make it to the interview on time and does not get the job.