I developed the same habit in high school. It was really annoying to pretty much everyone I ever had a meeting with (or a class or a date or whatever). I lost a

I developed the same habit in high school. It was really annoying to pretty much everyone I ever had a meeting with (or a class or a date or whatever). I lost a couple of really good jobs because of it. You really just need to change your habits. It's totally doable, too, if you convince yourself that you need a few minutes before the meeting starts to gather your thoughts or whatever. Just set expectations appropriately and meet them. Show up when you say you're going to, and if you don't, have a damn good reason why you didn't. I have no idea why so many highly paid professionals are saying something other than that.