I know you're busy. We all are. Does it seem that you never get ahead of the curve? That you are always late for almost every meeting, appointment and even getting to work?

Let's look at why it happens in the first place:

You think you're special. You're not. You are just like everyone else. Start treating people with respect.
You're on a long-term ego trip. Even CEO's show up on time to meetings with the lowest employees on the corporate totem pole.
You want to look important. It doesn't make you look like "executive material" (i.e., no time for the peons). It makes you look like an ass.
You forget about the time. Sorry, that's not an option. You are an adult — start acting like one.

Get it through your head — you hate it when people are late for you — don't do it to them. Being on time or early shows respect. AND - it allows the meeting to possibly end early.

Here are some quick tips to stop that from happening:

Set all clocks that you monitor 5-10 minutes ahead. I know that it's stupid - but it works.
Buffer time around meetings. If you bump one up against another, you won't have time to get to it. And you will then have time to hit the bathroom.
If you're too busy, try to cut out some lower priority meetings. See this post.
Get up earlier if you are always late to work. You miss the later traffic AND you get more work done before normal work hours begin.

Being late isn't a personality defect, most of the time, you just don't care. Start caring.